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COMMITMENTS AND CONTINGENCIES (Tables)
 6 Months Ended
Jun. 30, 2013
Commitments and Contingencies Disclosure [Abstract]  
Rollforward of Asbestos Claims
Activity related to these asserted asbestos claims during the period was as follows: 
For the Six Months Ended June 30 (in thousands)
2013
 
2012
Pending claims – Beginning
96

 
105

New claims
2

 
2

Settlements(a)
(2
)
 
—

Dismissals(b)
(19
)
 
(11
)
Pending claims – Ending
77

 
96

Pending inactive claims(b)
18

 
29

Pending active claims
59

 
67

(a)
Settled claims for the six months ended June 30, 2012 rounded to less than one thousand.
(b)
Approximately eleven thousand claims dismissed during both six months ended June 30, 2013 and 2012 were filed in Mississippi and considered inactive. Inactive claims represent pending claims in Mississippi filed prior to 2004, which have been excluded from our asbestos measurement as we believe these claims have little to no value.
Roll Forward of Asbestos Liability and Related Assets
The following table provides a rollforward of the estimated asbestos liability and related assets for the six months ended June 30, 2013.
 
Liability
Asset
Net
Balance as of December 31, 2012
$
1,347.4

$
607.9

$
739.5

Asbestos provision
39.0

7.1

31.9

Net cash activity
(50.7
)
(39.0
)
(11.7
)
Balance as of June 30, 2013
$
1,335.7

$
576.0

$
759.7

Current portion
$
92.4

$
82.6

 
Noncurrent portion
$
1,243.3

$
493.4

 
Rollforward of Environmental Liability and Related Assets
The following table provides a rollforward of the estimated environmental liability and related assets for the six months ended June 30, 2013. 
 
Liability
 
Asset
 
Net
Environmental liability - December 31, 2012
$
96.1

 
$
12.3

 
$
83.8

Change in estimates for pre-existing accruals:
 
 
 
 
 
Continuing operations
3.7

 
(0.2
)
 
3.9

Discontinued operations
1.3

 
—

 
1.3

Accruals added during the period for new matters
0.4

 
—

 
0.4

Net cash activity
(5.6
)
 
(0.2
)
 
(5.4
)
Environmental liability - June 30, 2013
$
95.9

 
$
11.9

 
$
84.0
Range of Environmental Liability and Number of Active Sites for Environmental Matters
The following table illustrates the reasonably possible range of estimated liability, and number of active sites for environmental matters, at June 30, 2013. 
Low-end estimate
$
76.7

High end estimate
$
165.7

Number of active environmental investigation and remediation sites
62