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BENEFIT PLANS: (Tables)

9 Months Ended

Sep. 30, 2011

SCC Defined Benefit Pension Plans

Components of net periodic benefit costs

Schedule of components of net periodic benefit costs

		2011			2010
Interest cost		$	0.4		$	0.5
Expected return on plan assets		(0.5		)	(0.5		)
Amortization of net loss (gain)		0.1			—
Net periodic benefit costs		$	—		$	—

Minera Mexico Pension Plans

Components of net periodic benefit costs

Schedule of components of net periodic benefit costs

		2011			2010
Interest cost		$	0.5		$	1.2
Service cost		0.8			1.5
Expected return on plan assets		(2.5		)	(2.2		)
Amortization of transition assets, net		(0.1		)	—
Amortization of net actuarial loss		(1.1		)	(0.7		)
Amortization of prior services cost		—			0.1
Net periodic benefit cost		$	(2.4	)	$	(0.1	)

Minera Mexico Post-retirement Healthcare Plan

Components of net periodic benefit costs

Schedule of components of net periodic benefit costs

		2011			2010
Interest cost		$	2.8		$	3.2
Service cost		—			0.3
Amortization of net loss (gain)		—			0.1
Amortization of transition obligation		1.1			1.0
Net periodic benefit cost		$	3.9		$	4.6

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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X

- Definition

Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Topic 715

-SubTopic 20

-Publisher FASB

-Number

-Article

-Subparagraph (h)

-Name Accounting Standards Codification

-Paragraph 1

-Section 50

-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920

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