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1. Coal Laboratory Worker on the Telephone

IDNO:
002389
Title:
Coal Laboratory Worker on the Telephone

2. Interior of a Coal Laboratory

IDNO:
002390
Title:
Interior of a Coal Laboratory

3. Coal Laboratory Building

IDNO:
002391
Title:
Coal Laboratory Building

4. Equipment in a Coal Laboratory

IDNO:
002392
Title:
Equipment in a Coal Laboratory

5. Technician Working at the Arkwright Coal Laboratory

IDNO:
002393
Title:
Technician Working at the Arkwright Coal Laboratory

6. Temco Brand Equipment in a Coal Laboratory

IDNO:
002394
Title:
Temco Brand Equipment in a Coal Laboratory