1881 Incorporated
18 Karat, Inc.
A. E. Reken Welding & Fabricating
Abate Irwin Inc.
Advance Mining Service
Allegheny Mineral Corp.
Alliance Coal, LLC
Alliance Consulting, Inc.
AMD Industries, Inc.
Amerikohl Mining, Inc.
APEX Companies
Arcosa Aggregates
ARIPPA
Atlas Service Corporation
Austin Powder Company
Babst/Calland
Banshee Farms LLC
BEG Group LLC
Berwind Natural Resources
B.M. Kramer & Company Inc.
Bradigan’s Incorporated
Brookman Iron & Metals
Buchanan Ingersoll & Rooney PC
Buckley Associates Inc.
Budd Scale Services & Sales
Burns Drilling & Excavating
CB Mining
Camber Corporation
Cambria Co. Assoc. for the Blind & Handicapped
Caudill Seed & Warehouse Co.
Chain Connection Inc.
Chemstream, Inc.
Cintas Corporation
Civil & Environmental Consultants, Inc.
Cleveland Brothers Equipment Co., Inc.
Coal Hill Mining Company
Colona Transfer LP
CONSOL Energy
Con-Stone, Inc.
Corsa Coal
Covers-All Canvas Products
Crown Battery Manufacturing Co.
CSC Insurance Options
Cumberland Surety, Inc.
DSA Sales Associates, LLC
Daniel Pavick
E. M. Brown, Inc.
Earthtech, Inc.
ENCOVA
EnerSys
Environmental Energy Solutions LLC
Environmental Protection Inc.
Evergreen Insurance LLC
Export Fuel Company, Inc.
Farnham & Pfile
Fearless Leasing
Fike Associates, Inc.
Fisher Mining Company
Fisher Phillips LLC
FLSmidth
F.N.B. Wealth Management
Frontier Railroad Services LLC
Global Mine Service Inc.
GMS Mine Repair & Maintenance, Inc.
G-S Hydraulics, Inc.
H & H Electrical Service Center, Inc.
Harsco Metals & Minerals
HBT AMERICAS LLC
Heritage Coal and Natural Resources, LLC
Highland Industries
Hollowood Heating, Inc.
Hoy’s Construction Company, Inc.
IMA | ESS
Industrial Battery of Pittsburgh
Iron Senergy
Irwin Car & Equipment
Jack R. Chamberlin PLS
JADCO Manufacturing Company, Inc.
JAS Mine Consulting
Jennmar Corporation
John Kosky Contracting, Inc.
John T Boyd Company
Junior Coal Contracting, Inc.
K & K Mine Products Inc.
Kaceys Material Handling
KaJon Materials Inc.
Ketchem Construction Company
LCT Energy, LP
Lee Supply Co., Inc.
LEMAC Mine Service, Inc.
Leman Machine Company
Liberty Mining Consultants, Inc.
Lincoln Contracting & Equipment Co., Inc
Lingis Manufacturing and Machine Co., Inc.
M Resources
Marg Energy Inc.
Mayo Manufacturing Company, Inc.
McGrew Welding
Meinert/Mashek Communications
MICON
Modern Pump & Equipment, Inc.
Moody & Associates, Inc.
Murrysville Machinery Co., Inc.
Musser Engineering
Natural Resource Partners, LP
NBL Mining Company LLC
NACCO Natural Resources
Ocenco Incorporated
Original Fuels, Inc.
Outdoor Solutions, Inc.
Patriot Safety Services
Peacock Keller
Penn Environmental & Remediation, Inc.
Pennsylvania Mining Professionals
Philip Reese Coal Company, Inc.
PM Supply, Inc
PrepTech, Inc.
PRS3 Development
Quaker Sales Corporation
Quikrete Companies
R. C. Kadyk Corporation
R. G. Johnson Company, Inc.
R. K. Stein & Company
Reschini Group, The
RFI Resources, LLC
RICHWOOD
River Materials
Riverlift Industries & Riverlift Trucking
Robindale Energy Services, Inc.
Rockwood Casualty Insurance
Rosebud Mining Company
Rosscapes, Inc.
Rudd Equipment Co.
Shortway Service, Inc.
Simkol Corp.
Skyward Specialty Insurance
Somerset International, Inc.
Steel Nation/Steel Building
Tassco Steel
3M Corporation
Three Rivers Marine & Rail Terminals LP
Unionvale Coal Company
United Central Industrial Supply
United States Steel
W.K. Merriman, Inc.
WallacePancher Group
Wampum Hardware Co.
Waroquier Coal Company, Inc.
West River Conveyors & Machinery Co.
West View Cunningham Co., Inc
Xcoal Energy & Resources