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14. Related Party Transactions | 12 Months Ended
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Dec. 31, 2013
Related Party Transactions [Abstract] |
Related Party Transactions | Amounts due to (due from) related parties at December 31, 2013 and 2012 were as follows:
|  | 2013 |  |  | 2012 |
John C. Lawrence, president and chairman(1) |  | $ | 15,549 |  |  | $ | 17,522 |
Net related party liabilities |  | $ | 15,549 |  |  | $ | 17,522 |
Transactions affecting the payable to Mr. Lawrence during 2013, 2012 and 2011 were as follows:
|  | 2013 |  |  | 2012 |  |  | 2011 |
Balance, beginning of year |  | $ | 17,522 |  |  | $ | 47,843 |  |  | $ | 18,060 |
Aircraft rental charges |  |  | 65,502 |  |  |  | 74,490 |  |  |  | 86,058 |
Payments and advances, net |  |  | (67,475 | ) |  |  | (104,811 | ) |  |  | (56,275 | )
Balance, end of year |  | $ | 15,549 |  |  | $ | 17,522 |  |  | $ | 47,843 |
The Chairman of the audit committee and compensation committee received $36,000 in cash during 2013 for services performed. The Chairman of the audit committee and compensation committee and one other audit committee member received a total of $56,000 in cash during 2012 for services performed. In addition to transactions described above, during 2013, 2012, and 2011, the Company had the following transactions with related parties:
● | During 2013, 2012, and 2011, the Company paid $81,642, $89,204, and $107,359, respectively, to a former director for development of Mexican mill sites and consulting fees.
● | A director of the Company acted on behalf of the Company as liaison to Mexican officials through 2011. During the year ended December 31, 2011, fees and expenses paid to this director were $37,083.
● | Royalty expense, based on sales of zeolite, of $52,576, $61,678, and $45,515, was incurred for the years ended December 31, 2013, 2012 and 2011, respectively, to a company controlled by the estate of Al Dugan, formerly a significant stockholder and the father of a former director.

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- Definition The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph b -Article 3A Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph k -Article 4 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39678-107864 + Details
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