Exhibit 21 (1)

Subsidiaries
of
Layne Christensen Company

	Jurisdiction	Percentage of Voting Stock owned by
Name of Subsidiary	of Incorporation	Company ¨
Ausdrill Burkina SARL	Burkina		100	%
Boyles Bros. Drilling Company	Utah		100	%
Cherryvale Pipeline, LLC	Kansas		75	%
Christensen Boyles Corporation	Delaware		100	%
Christensen Boyles Corporation of Canada Ltd.	Alberta, Canada		100	%
ESEMES (Mauritius) Limited	Mauritius		100	%
G&K Properties Pty Ltd	Australia		100	%
International Directional Services, L.L.C.	Delaware		100	%
International Directional Services of Canada Ltd.	Ontario, Canada		100	%
International Mining Services Pty Ltd	Australia		100	%
Layne Christensen Australia Pty Limited	Australia		100	%
Layne Christensen Canada Limited	Calgary, Alberta, Canada		100	%
Layne de Bolivia S.R.L.	Bolivia		100	%
Layne de Mexico, S.A. de C.V.	Hermosillo, Sonora, Mexico		100	%
Layne Drilling Pty Ltd (f/k/a Glindemann & Kitching Pty Ltd)	Australia		100	%
Layne Energy, Inc.	Delaware		100	%
Layne Energy Cherryvale, LLC	Delaware		100	%
Layne Energy Cherryvale Pipeline, LLC	Delaware		100	%
Layne Energy Dawson, LLC	Delaware		100	%
Layne Energy Dawson Pipeline, LLC	Delaware		100	%
Layne Energy Illinois, LLC	Delaware		100	%
Layne Energy Illinois Pipeline, LLC	Delaware		100	%
Layne Energy Marketing, LLC	Delaware		100	%
Layne Energy Operating, LLC	Delaware		100	%
Layne Energy Osage, LLC	Delaware		100	%
Layne Energy Pipeline, LLC	Delaware		100	%
Layne Energy Production, LLC	Delaware		100	%
Layne Energy Resources, Inc.	Delaware		100	%
Layne Energy Sycamore, LLC	Delaware		100	%
Layne Energy Sycamore Pipeline, LLC	Delaware		100	%
Layne Texas, Incorporated	Delaware		100	%

	Jurisdiction	Percentage of Voting Stock owned by
Name of Subsidiary	of Incorporation	Company ¨
Layne Water Development and Storage, LLC	Delaware		100	%
Lenity Investments (Pvt) Ltd	Zimbabwe		100	%
Mid-Continent Drilling Company	Delaware		100	%
PT Layne Christensen Indonesia	Indonesia		100	%
SMS Holdings Pty Ltd	Australia		100	%
SMS Offshore Pty Ltd	Australia		100	%
Shawnee Oil & Gas, L.L.C.	Delaware		100	%
Stamm-Scheele Incorporated	Louisiana		100	%
Stanley Exploration & Mining Company Limited	Ghana		100	%
Stanley Mining Services Pty Limited	Australia		100	%
Stanley Mining Services (Tanzania) Ltd	Tanzania		100	%
Stanley Mining Services (Uganda) Ltd	Uganda		100	%
Stanley Mining Services Zimbabwe (Private) Limited	Zimbabwe		100	%
Tecniwell S.r.l.	Italy		100	%
Toledo Oil & Gas Services, Inc.	Louisiana		100	%
Vibration Technology, Inc.	Delaware		100	%
West African Drilling Services (Guinea) SARL	Guinea		100	%
West African Drilling Services (MALI) SARL	Mali		100	%
West African Drilling Services Pty Ltd	Australia		100	%
West African Drilling Services (No. 2) Pty Ltd	Australia		100	%
West African Holdings Pty Ltd	Australia		100	%
Whitfield (Proprietary) Limited	Botswana		100	%

¨ directly or indirectly through its subsidiaries, nominees or trustees

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