M-I L.l.c.
M-I Australia Pty Ltd
M-I Drilling Fluids Canada Inc.
M-I Drilling Fluids Company
M-I Drilling Fluids L.l.c.
M-I Drilling Fluids U.k. Limited
M-I Drilling Fluids Uk Limited
M-I Epcon As
M-I Finland Oy
M-I L.l.c.
M-I Llc
M-I Production Chemicals Uk Limited
M-I Swaco Norege As
M-I Swaco Norge As
M-I. L.l.c.
M-J Partnership
M-K-V Corporation
M-Management-Tex Ltd.
M-O Valve Company
M-O Valve Company Limited