Exhibit 21
SUBSIDIARY LIST
NAME OF SUBSIDIARY INCORPORATION | STATE OF | |
Oglebay Norton Engineered Materials, Inc. | Ohio | |
Oglebay Norton Industrial Sands, Inc. | California | |
Oglebay Norton Management Company | Ohio | |
Oglebay Norton Marine Management Company, L.L.C. | Delaware | |
Oglebay Norton Marine Services Company, L.L.C. | Delaware | |
Oglebay Norton Minerals, Inc. | Delaware | |
Oglebay Norton Specialty Minerals, Inc. | Ohio | |
Oglebay Norton Terminals, Inc. d/b/a/ Cleveland Bulk Terminal | Ohio | |
ON Coast Petroleum Company | Texas | |
ON Marine Services Company | Delaware | |
ONCO Investment Company | Delaware | |
ONCO WVA, Inc. | West Virginia | |
ONMS Management Company, LLC | Delaware | |
ONTEX, Inc. | Delaware | |
Saginaw Mining Company | Ohio | |
Texas Mining, LP | Delaware | |
Global Stone Corporation | Ohio | |
Global Stone Chemstone Company | Delaware | |
Global Stone Filler Products Company | Delaware | |
Global Stone James River, Inc. | Delaware | |
Global Stone Management Company | Georgia | |
Global Stone PenRoc, LP | Pennsylvania | |
Global Stone Portage, LLC | Indiana | |
Global Stone St. Clair Inc. | Delaware | |
Global Stone Tenn Luttrell Company | Delaware | |
GS Lime Company | Georgia | |
GS PC Inc. | Delaware | |
Michigan Limestone Operations, Inc. | Michigan | |
Erie Sand and Gravel Company | Pennsylvania | |
Erie Navigation Company | Pennsylvania | |
Erie Steamship Company | Delaware | |
Mountfort Terminal, Ltd. | Pennsylvania |