BIRD INCORPORATED

750 E SWEDESFORD ROAD

CARBORUNDUM ABRASIVES COMPANY

750 E SWEDESFORD RD

CERTAINTEED CORPORATION

750 E SWEDESFORD FORD

SAINT-GOBAIN CORPORATION

750 E. SWEDESFORD RD.

THE WENTWORTH GROUP INC

901 S TROOPER ROAD

SAINT-GOBAIN CERAMICS & PLASTICS INC

750 EAST SWEDESFORD ROAD

SAINT-GOBAIN ABRASIVES INC

750 EAST SWEDESFORD ROAD

CERTAINTEED CORPORATION

750 EAST SWEDESFORD ROAD

PTI SERVICES INCORPORATED

2621 VAN BUREN AVENUE VALLEY FORGE BSNS CTR

SAINT-GOBAIN CERAMICS & PLASTICS INC

750 EAST SWEDESFORD ROAD

SAINT-GOBAIN ABRASIVES, INC.

750 E. SWEDESFORD ROAD

PQ CORPORATION

PO BOX 840

GS ROOFING PRODUCTS COMPANY, INC.

750 EAST SWEDESFORD ROAD

HOBBS & TOWNE, INC.

P.O. BOX 987
PMB 269