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<SEC-DOCUMENT>0001104659-06-056103.txt : 20060818
<SEC-HEADER>0001104659-06-056103.hdr.sgml : 20060818
<ACCEPTANCE-DATETIME>20060818162120
ACCESSION NUMBER:		0001104659-06-056103
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20060818
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20060818
DATE AS OF CHANGE:		20060818

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MESA ROYALTY TRUST/TX
		CENTRAL INDEX KEY:			0000313364
		STANDARD INDUSTRIAL CLASSIFICATION:	OIL ROYALTY TRADERS [6792]
		IRS NUMBER:				746284806
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-07884
		FILM NUMBER:		061043863

	BUSINESS ADDRESS:	
		STREET 1:		712 MAIN STREET
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77210
		BUSINESS PHONE:		7132165100

	MAIL ADDRESS:	
		STREET 1:		P O BOX 4717
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77210
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a06-18367_18k.htm
<DESCRIPTION>CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES
<TEXT>
<html>

<head>






</head>

<body lang="EN-US">

<div style="font-family:Times New Roman;">
 <div style="border:none;border-top:double windowtext 6.0pt;padding:0pt 0pt 0pt 0pt;"> <p style="border:none;margin:0pt 0pt .0001pt;padding:0pt;"><a name="scotch"></a></p> </div>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:auto;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">UNITED STATES</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:auto;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">SECURITIES AND EXCHANGE COMMISSION</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Washington, D.C.
20549</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:auto;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">FORM 8-K</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:auto;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;">CURRENT REPORT</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:auto;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;">Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934</font></b></p>

<p style="font-size:10.0pt;font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">Date of Report (Date of earliest
event reported):</font></b> August 18, 2006</p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:auto;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">Mesa Royalty Trust</font></b></p>

<p style="margin:0pt 0pt 12.0pt;page-break-after:auto;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact name of registrant as specified in its charter)</font></p>

<div align="center">

<table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse;margin-left:.7pt;">
 <tr>
  <td width="163" valign="top" style="padding:0pt .7pt 0pt .7pt;width:122.5pt;">
  <p align="center" style="font-size:10.0pt;margin:0pt 0pt .0001pt;text-align:center;"><!-- SET mrlHTMLTableLeft --><!-- SET mrlNoTableShading --><b>Texas</b></p>
  </td>
  <td width="16" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:12.0pt;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="163" valign="top" style="padding:0pt .7pt 0pt .7pt;width:122.5pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">1-07884</font></b></p>
  </td>
  <td width="16" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:12.0pt;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="163" valign="top" style="padding:0pt .7pt 0pt .7pt;width:122.5pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">76-6284806</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="163" valign="top" style="padding:0pt .7pt 0pt .7pt;width:122.5pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or other
  jurisdiction of</font></p>
  </td>
  <td width="16" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:12.0pt;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="163" valign="top" style="padding:0pt .7pt 0pt .7pt;width:122.5pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Commission</font></p>
  </td>
  <td width="16" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:12.0pt;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="163" valign="top" style="padding:0pt .7pt 0pt .7pt;width:122.5pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(IRS Employer</font></p>
  </td>
 </tr>
 <tr>
  <td width="163" valign="top" style="padding:0pt .7pt 0pt .7pt;width:122.5pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">incorporation)</font></p>
  </td>
  <td width="16" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:12.0pt;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="163" valign="top" style="padding:0pt .7pt 0pt .7pt;width:122.5pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">File Number)</font></p>
  </td>
  <td width="16" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:12.0pt;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="163" valign="top" style="padding:0pt .7pt 0pt .7pt;width:122.5pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Identification
  No.)</font></p>
  </td>
 </tr>
</table>

</div>

<p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div align="center">

<table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse;margin-left:.7pt;">
 <tr>
  <td width="237" valign="top" style="padding:0pt .7pt 0pt .7pt;width:177.5pt;">
  <p align="center" style="font-size:10.0pt;margin:0pt 0pt .0001pt;text-align:center;"><!-- SET mrlHTMLTableLeft --><!-- SET mrlNoTableShading --><b>JPMorgan Chase Bank, N.A., Trustee</b></p>
  </td>
  <td width="16" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:12.0pt;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="144" valign="top" style="padding:0pt .7pt 0pt .7pt;width:108.0pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="237" valign="top" style="padding:0pt .7pt 0pt .7pt;width:177.5pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Institutional
  Trust Services</font></b></p>
  </td>
  <td width="16" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:12.0pt;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="144" valign="top" style="padding:0pt .7pt 0pt .7pt;width:108.0pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="237" valign="top" style="padding:0pt .7pt 0pt .7pt;width:177.5pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">221
  West Sixth Street</font></b></p>
  </td>
  <td width="16" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:12.0pt;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="144" valign="top" style="padding:0pt .7pt 0pt .7pt;width:108.0pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="237" valign="top" style="padding:0pt .7pt 0pt .7pt;width:177.5pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Austin,
  Texas</font></b></p>
  </td>
  <td width="16" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:12.0pt;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="144" valign="top" style="padding:0pt .7pt 0pt .7pt;width:108.0pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">78701</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="237" valign="top" style="padding:0pt .7pt 0pt .7pt;width:177.5pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of
  principal executive offices)</font></p>
  </td>
  <td width="16" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:12.0pt;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="144" valign="top" style="padding:0pt .7pt 0pt .7pt;width:108.0pt;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Zip Code)</font></p>
  </td>
 </tr>
</table>

</div>

<p align="center" style="margin:12.0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Registrant&#146;s telephone number, including area code: <b>1-800-852-1422</b></font></p>

<p align="center" style="margin:12.0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">NOT APPLICABLE</font></b></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Former name or former address, if changed since last
report.)</font></p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the
appropriate box below if the Form 8-K filing is intended to simultaneously
satisfy the filing obligation of the registrant under any of the following provisions:</font></p>

<p style="font-size:10.0pt;margin:0pt 0pt 12.0pt 15.0pt;text-indent:-15.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Written
communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</p>

<p style="font-size:10.0pt;margin:0pt 0pt 12.0pt 15.0pt;text-indent:-15.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Soliciting
material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</p>

<p style="font-size:10.0pt;margin:0pt 0pt 12.0pt 15.0pt;text-indent:-15.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
240.14d-2(b))</p>

<p style="font-size:10.0pt;margin:0pt 0pt .0001pt 15.0pt;text-indent:-15.0pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>Pre-commencement communications pursuant to
Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</p>


 <div style="border:none;border-bottom:double windowtext 6.0pt;padding:0pt 0pt 0pt 0pt;"> <p style="border:none;margin:0pt 0pt .0001pt;padding:0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p> </div>
</div><br><hr size="3" width="100%" noshade color="#010101" align="center">

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<p style="margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item
7.01&#160; Regulation FD Disclosure.</font></b></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On August 18,
2006,<b> </b>Mesa Royalty Trust issued a
press release announcing that had been informed that Pioneer Natural Resources
USA, Inc. had reached an agreement to settle claims in the lawsuit <i>John Steven Alford and Robert Larrabee, individually and on behalf of a
Plaintiff Class v. Pioneer Natural Resources USA, Inc.</i>&#160; A copy of the press release is filed as
Exhibit 99.1 hereto and is incorporated herein by reference.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to
General Instruction B.2 of Form 8-K, the press release attached as Exhibit 99.1
is not &#147;filed&#148; for purposes of Section 18 of the Securities Exchange Act of
1934, as amended (the &#147;Exchange Act&#148;), is not subject to the liabilities of
that section and is not deemed incorporated by reference in any filing by Mesa
Royalty Trust under the Exchange Act or the Securities Act of 1933, as amended,
but is instead &#147;furnished&#148; for purposes of that instruction.</font></p>

<p style="margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item
9.01&#160; Financial Statements and Exhibits.</font></b></p>

<p style="font-family:Times New Roman;font-size:10.0pt;margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(d)&#160; </font><b><font size="1" style="font-size:8.5pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font></b>Exhibits.</p>

<p style="margin:0pt 0pt 12.0pt 36.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Exhibit 99.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Mesa
Royalty Trust Press Release dated August 18, 2006.</font></p>


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<p align="center" style="margin:12.0pt 0pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SIGNATURES</font></b></p>

<p style="margin:0pt 0pt 24.0pt;punctuation-wrap:simple;text-autospace:none;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the
requirements of the Securities Exchange Act of 1934, the registrant has duly
caused this report to be signed on its behalf by the undersigned hereunto duly
authorized.</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.64%;">
  <p style="font-size:10.0pt;margin:0pt 0pt .0001pt;"><!-- SET mrlNoTableShading --></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.24%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" colspan="3" valign="top" style="padding:0pt .7pt 0pt 0pt;width:49.12%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Mesa Royalty Trust</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.24%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" colspan="3" valign="top" style="padding:0pt .7pt 0pt 0pt;width:49.12%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.24%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.72%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="45%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:45.42%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;JPMorgan
  Chase Bank, N.A., as Trustee</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.24%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" colspan="3" valign="top" style="padding:0pt .7pt 0pt 0pt;width:49.12%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.24%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" colspan="3" valign="top" style="padding:0pt .7pt 0pt 0pt;width:49.12%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date: August 18, 2006</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.24%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.72%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="28%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:28.3%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ Mike Ulrich</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:17.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.24%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" colspan="3" valign="top" style="padding:0pt .7pt 0pt 0pt;width:49.12%;">
  <p style="margin:0pt 0pt .0001pt 40.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Mike Ulrich</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:48.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.24%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" colspan="3" valign="top" style="padding:0pt .7pt 0pt 0pt;width:49.12%;">
  <p style="margin:0pt 0pt .0001pt 40.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Vice President
  and Trust Officer</font></p>
  </td>
 </tr>
</table>


 <p style="font-size:10.0pt;margin:24.0pt 0pt .0001pt;text-align:center;"><font face="Times New Roman">3</font></p> <br><hr size="3" width="100%" noshade color="#010101" align="center">

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<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">EXHIBIT INDEX</font></b></p>

<p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="7%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:7.5%;">
  <p style="font-size:10.0pt;margin:0pt 0pt .0001pt;"><!-- SET mrlNoTableShading --><b><font size="1" style="font-size:8.0pt;font-weight:bold;">Exhibit</font></b></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.4%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="88%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:88.1%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Description</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="7%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:7.5%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.4%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:88.1%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="7%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:7.5%;">
  <p style="margin:0pt 0pt .0001pt 20.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.1</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.4%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:88.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Mesa Royalty Trust Press Release dated August 18,
  2006.</font></p>
  </td>
 </tr>
</table>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>


 <p style="font-size:10.0pt;margin:24.0pt 0pt .0001pt;text-align:center;"><font face="Times New Roman">4</font></p>
</div><br><hr size="3" width="100%" noshade color="#010101" align="center">

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<body lang="EN-US">

<div style="font-family:Times New Roman;">
 <p style="margin:0pt 0pt .0001pt;text-align:center;"></p>

<p align="right" style="margin:0pt 0pt 12.0pt;text-align:right;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.15pt;">Exhibit 99.1</font></b></p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.15pt;">Mesa-Royalty-Trust</font></p>

<p style="margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.15pt;">Mesa Royalty Trust Announces
Settlement of Litigation by Pioneer Affecting Trust Properties</font></b></p>

<p style="margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.25pt;">MESA ROYALTY TRUST</font></b></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="38%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:38.66%;">
  <p style="font-size:10.0pt;margin:0pt 0pt .0001pt;"><!-- SET mrlNoTableShading --><b>JPMorgan Chase Bank, N.A., Trustee</b></p>
  </td>
  <td width="61%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:61.34%;">
  <p style="margin:0pt 0pt .0001pt 20.0pt;text-indent:-10.0pt;"><b><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;font-weight:bold;">NEWS</font></i></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="38%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:38.66%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="61%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:61.34%;">
  <p style="margin:0pt 0pt .0001pt;"><b><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;font-weight:bold;letter-spacing:-.35pt;">RELEASE</font></i></b></p>
  </td>
 </tr>
</table>

<h1 style="font-weight:normal;margin:12.0pt 0pt;page-break-after:avoid;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">FOR
IMMEDIATE RELEASE</font></b></h1>

<p style="font-size:10.0pt;margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.1pt;">AUSTIN, TEXAS August 18, 2006 &#151; Mesa Royalty Trust (NYSE symbol-MTR) </font>today
announced that it has been informed that Pioneer Natural Resources USA, Inc. (&#147;Pioneer USA&#148;) has reached an agreement to settle claims made in
the lawsuit <i>John Steven Alford and
Robert Larrabee, individually and on behalf of a Plaintiff Class v. Pioneer
Natural Resources USA, Inc.</i>, which is pending in the 26th Judicial
District Court, Stevens County, Kansas.&#160;
The plaintiffs in this lawsuit are royalty owners in oil and gas
properties located in the Hugoton field, which are owned by Pioneer USA, a
subsidiary of Pioneer Natural Resources Company (&#147;Pioneer&#148;).&#160; The plaintiffs sued a predecessor company to
Pioneer USA asserting various claims relating to alleged improper deductions in
the calculation of royalties.</p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Under the terms of the agreement, Pioneer
USA will make cash payments to settle the plaintiffs&#146; claims with respect to
production occurring on and before December 31, 2005.&#160; Pioneer USA also agreed to adjust the manner
in which royalty payments to the class members will be calculated for
production occurring on and after January 1, 2006.</font></p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pioneer&#146;s portion of the cash payment is expected to be
approximately $32 million. The cash portion will be paid in two
installments.&#160; Pioneer has advised the Trustee
that the portion of the cash payments net to the Trust&#146;s interest will be
approximately $1.1 million payable on September 30, 2006 and $1.0 million
payable on September 30, 2007.&#160; Pioneer
USA will initially pay the costs attributable to the Trust&#146;s interest but will
recover these costs through payments out of future gross proceeds on the
Trust&#146;s properties.&#160; Accordingly, royalty
income to the Trust will be reduced until all of these payments, together with
any applicable interest as provided under the overriding royalty conveyance of
the Trust&#146;s properties, are recouped by Pioneer USA.</font></p>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pioneer has advised the Trustee that the
settlement agreement is subject to customary conditions, including preliminary
and final court approval.</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="14%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:14.76%;">
  <p style="font-size:10.0pt;margin:0pt 0pt .0001pt;"><!-- SET mrlNoTableShading --><b>Contact:</b></p>
  </td>
  <td width="85%" colspan="3" valign="top" style="padding:0pt .7pt 0pt 0pt;width:85.24%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Mesa Royalty Trust</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="14%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:14.76%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="85%" colspan="3" valign="top" style="padding:0pt .7pt 0pt 0pt;width:85.24%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.15pt;">JPMorgan Chase Bank,
  N.A., as Trustee</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="14%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:14.76%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="85%" colspan="3" valign="top" style="padding:0pt .7pt 0pt 0pt;width:85.24%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.15pt;">Mike Ulrich</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="14%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:14.76%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="85%" colspan="3" valign="top" style="padding:0pt .7pt 0pt 0pt;width:85.24%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.15pt;">1(800) 852-1422</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="14%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:14.76%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="85%" colspan="3" valign="top" style="padding:0pt .7pt 0pt 0pt;width:85.24%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.15pt;">(512) 479-2562</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="14%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:14.76%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="85%" colspan="3" valign="top" style="padding:0pt .7pt 0pt 0pt;width:85.24%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.15pt;">&nbsp;</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="100%" colspan="4" valign="top" style="padding:0pt .7pt 0pt 0pt;width:100.0%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;letter-spacing:-.15pt;">www.businesswire.com/cnn/mtr.htm</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="17%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:17.86%;">
  <p style="margin:0pt 0pt .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="24%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:24.88%;">
  <p style="margin:0pt 0pt .0001pt 30.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.15pt;">221 West Sixth Street,</font></p>
  </td>
  <td width="57%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:57.28%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;letter-spacing:-.15pt;">Austin, TX 78701</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="110" style="border:none;"></td>
  <td width="23" style="border:none;"></td>
  <td width="186" style="border:none;"></td>
  <td width="428" style="border:none;"></td>
 </tr>
</table>

<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

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