M-I Drilling Fluids Canada Inc.

M-I Drilling Fluids Canada, Inc.

M-K-Canadian Tools Ltd.

M. & A. Aaron Holdings Limited

M. A. Lapp & Associates Limited

M. A. Project Controls Inc.

M. B. Siblings Inc.

M. C. I. Energy And Water Process Systems Inc.

M. D. Boardman Business Intelligence Inc.

M. E. Moss Holdings Ltd.

M. G. Environmental Systems Co. Ltd.

M. I. Hipson Manufacturers Agents Ltd.

M. I. I. Research & Training Ltd.

M. I. Travel Inc.

M. J. Tompkins And Associates Corporation

M. Kornik Holdings Ltd.

M. Kostynuik Endeavors Corp.

M. Private Residences Inc.

M. T. R. Market Trends Research Corporation

M. W. Krahn and Sons Contracting Ltd.