Knouse Food
Chambersburg, PA

Borough of Shippensburg
Shippensburg, PA

General Motors
Baltimore, MD

Highwater Clays
Ashville, NC

Bostic Findley
Paulsboro, NJ

PT Inco
Indonesia

State Correctional Institution at Camp Hill
Camp Hill, PA

FLS Airtech
Bethlehem, PA

FLS Motan
Bethlehem, PA

FL Smidth Company
Bethlehem, PA

Continental Tire Company
Charlotte, NC
Mayfield, KT

Cementos Andino
Venezuela

Stiles and Hart Brick Company
Bridgewater, MA

Lebanon Seaboard Company
Lebanon, PA

Lancaster Products
Lebanon, PA

Constellation Power Company
Baltimore, MD

United States Navy, Philadelphia Shipyard
Philadelphia, PA

IBM
Hallstead, PA

Ash Grove Cement
Chanute, KS

Quena Cement
Egypt

Senegal Cement
Senegal Africa

Phoenix Cement
Phoenix, AR

Rinker Materials Corporation
Miami, FL

Southdown Cement
Apple Valley, CA

KHD Cement
Asia

Blue Circle Cement Blending
Calera, AL

Holnam Raw Blender Silo
St. Louis, MO

North American Refractories Company
Cincinnati, OH

Earth Shell Food Containers
Baltimore, MD

Fuller Bulk Handling, Inc.
Bethlehem, PA