Name of Subsidiary

Jurisdiction of Organization

Fairmount Santrol Holdings Inc.

Delaware

FMSA Inc.

Delaware

Fairmount Santrol Inc.

Delaware

Fairmount Minerals Sales de Mexico, S. de R.L. de C.V.

Mexico

Santrol de Mexico, S. de R.L. de C.V.

Mexico

Best Sand Corporation

Ohio

Best Sand of Pennsylvania, Inc.

Ohio

Cheyenne Sand Corp.

Michigan

Construction Aggregates Corporation of Michigan, Inc.

Michigan

Standard Sand Corporation

Michigan

Specialty Sands, Inc.

Michigan

Lake Shore Sand Company (Ontario) Ltd.

Ontario, Canada

Fairmount Water Solutions, LLC

Ohio

Mineral Visions Inc.

Ohio

Technisand, Inc.

Delaware

Technisand Canada Sales Ltd.

British Columbia

Santrol Europe ApS

Denmark

Wisconsin Industrial Sand Company, LLC

Delaware

Wisconsin Specialty Sands, Inc.

Texas

Alpha Resins, LLC

Ohio

Technimat LLC (90%)

Ohio

Santrol (Yixing) Proppant Co. Ltd (70%)

China

Wedron Silica Company

Ohio

Wexford Sand Co.

Michigan

Fairmount Minerals, LLC

Ohio

Black Lab, LLC

Ohio

Self-Suspending Proppant LLC

Delaware

Shakopee Sand LLC

Minnesota

FML Alabama Resin, Inc.

Ohio

FML Resin, LLC

Ohio

FML Sand, LLC

Ohio

FML Terminal Logistics, LLC

Ohio

Fairmount Logistics LLC

Texas

***

Percentages in parentheses indicate Fairmount Santrol Holdings Inc.’s ownership.