Investments in Affiliates (Tables)

12 Months Ended

Jan. 31, 2013

Summary of Affiliates and Percentages Owned

A summary of directly owned affiliates, as well as their primary operating subsidiaries if applicable, and the percentages directly or indirectly owned by the Company are as follows as of January 31, 2013:

	Percentage Owned Directly			Percentage Owned Indirectly
Boyles Bros Servicios Tecnicos Geologicos S.A. (Panama)		50.00	%
Boytec, S.A. (Panama)					50.00	%
Boytec Sondajes de Mexico, S.A. de C.V. (Mexico)					50.00
Sondajes Colombia, S.A. (Colombia)					50.00
Mining Drilling Fluids (Panama)					25.00
Plantel Industrial S.A. (Chile)					50.00
Christensen Chile, S.A. (Chile)		50.00
Christensen Commercial, S.A. (Chile)		50.00
Geotec Boyles Bros., S.A. (Chile)		50.00
Centro Internacional de Formacion S.A. (Chile)					50.00
Geoestrella S.A. (Chile)					25.00
Diamantina Christensen Trading (Panama)		42.69
Christensen Commercial, S.A. (Peru)		35.38
Geotec, S.A. (Peru)		35.38
Boyles Bros., Diamantina, S.A. (Peru)		29.49

Summary of Financial Information of Affiliates

Financial information of the affiliates is reported with a one-month lag in the reporting period. Summarized financial information of the affiliates, including Diberil and its subsidiaries up to the date of acquisition of the remaining 50% equity interest, was as follows:

	As of and Years Ended January 31,
(in thousands)	2013		2012		2011
Balance sheet data:
Current assets	$	168,770	$	212,066	$	148,069
Noncurrent assets		74,572		109,868		84,622
Current liabilities		57,998		131,622		86,051
Noncurrent liabilities		21,203		16,529		14,951
Income statement data:
Revenues		444,871		449,599		329,932
Gross profit		98,418		118,658		67,545
Operating income		57,934		76,520		39,191
Net income		43,990		54,856		29,768