Name Greybull Mine/Mill
Owner M-I LLC
Operator M-I LLC
Type Surface
Product Bentonite

Year

Production
(Greybull Mine Only)
(tons)

Employees (Mine+Mill)
2010
509,158
113
2009
404,195
101
2008
842,362
186
2007
882,808
185
2006
670,124
173
2005
552,278
169
2004
631,542
146
2003
623,108
124
2002
495,961
111
2001
558,047
112
2000
549,332
97

1999

476,322

82

1998

415,657

90

1997

563,056

91

1996

373,503

74

1995

379,824

68

1994

251,786

48

 

Name Greybull/Stucco Mill/Mines
Owner Wyo-Ben, Inc.
Operator Wyo-Ben, Inc.
Type Surface
Product Bentonite

Year

Production
(Stucco and Sage Creek Mines Only)
(tons)

Employees (Stucco and Sage Creek Mines+Stucco Mill)
2010
713,542
78
2009
247,889
67
2008
423,414
85
2007
392,208
80
2006
400,192
77
2005
492.955
70
2004
428,600
70
2003
450,535
68
2002
437,302
 66
2001
396,757
70
2000
401,178
 70
1999
353,973
68

1998

397,881

72

1997

532,430

80

1996

370,627

 101

1995

210,877

72

1994

152,520

67