WESTMORELAND COUNTY
CLAY PROSPECT CLAY EXP PROSPECT
CLAY PROSPECT CLAY EXP PROSPECT
CLAY PROSPECT CLAY EXP PROSPECT
CLAY PROSPECT CLAY EXP PROSPECT
MOUNT AIRY FARM MINE DIATOMITE PAST PRODUCER
OAK GROVE PIT SAND & GRAVEL PRODUCER
GEORGE ROBBERECHT PIT SAND & GRAVEL PAST PRODUCER
R.W. COURTNEY SAND PIT SAND & GRAVEL PAST PRODUCER
TRADER GRAVEL CO. PIT SAND & GRAVEL PAST PRODUCER
WILLIAM JENKINS PIT SAND & GRAVEL PAST PRODUCER
UNNAMED GRAVEL PITS SAND & GRAVEL PAST PRODUCER
UNNAMED GRAVEL PITS SAND & GRAVEL PAST PRODUCER
UNNAMED GRAVEL PIT SAND & GRAVEL PAST PRODUCER
UNNAMED GRAVEL PIT SAND & GRAVEL PAST PRODUCER
UNNAMED GRAVEL PIT SAND & GRAVEL PAST PRODUCER
UNNAMED GRAVEL PIT SAND & GRAVEL PAST PRODUCER
UNNAMED GRAVEL PIT SAND & GRAVEL PAST PRODUCER
UNNAMED GRAVEL PIT SAND & GRAVEL PAST PRODUCER
UNNAMED GRAVEL PIT SAND & GRAVEL PAST PRODUCER
UNNAMED GRAVEL PIT SAND & GRAVEL PAST PRODUCER
UNNAMED GRAVEL PIT SAND & GRAVEL PAST PRODUCER
UNNAMED GRAVEL PIT SAND & GRAVEL PAST PRODUCER
UNNAMED GRAVEL PIT SAND & GRAVEL PAST PRODUCER