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1. Equipment in a Coal Laboratory

IDNO:
002392
Title:
Equipment in a Coal Laboratory

2. Temco Brand Equipment in a Coal Laboratory

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

3. Equipment in a Coal Laboratory

IDNO:
002395
Title:
Equipment in a Coal Laboratory

4. Equipment in a Coal Laboratory

IDNO:
002397
Title:
Equipment in a Coal Laboratory

5. Equipment in a Coal Laboratory

IDNO:
002398
Title:
Equipment in a Coal Laboratory

6. Equipment in a Coal Laboratory

IDNO:
002399
Title:
Equipment in a Coal Laboratory

7. Equipment in a Coal Laboratory

IDNO:
002400
Title:
Equipment in a Coal Laboratory
Hewittic Rectifier changes AC to DC current.

8. Hewittic Rectifier at Jamison Coal Mine No. 9 Laboratory

IDNO:
002401
Title:
Hewittic Rectifier at Jamison Coal Mine No. 9 Laboratory
Description:
Hewittic Rectifier changes AC to DC current.
Hewittic Rectifier changes AC to DC current.

9. Hewittic Rectifier at Jamison Coal Mine No. 9 Laboratory

IDNO:
002402
Title:
Hewittic Rectifier at Jamison Coal Mine No. 9 Laboratory
Description:
Hewittic Rectifier changes AC to DC current.

10. Coal Lab Equipment at the Arkwright Laboratory

IDNO:
002407
Title:
Coal Lab Equipment at the Arkwright Laboratory

11. Coal Lab Equipment at the Arkwright Laboratory

IDNO:
002408
Title:
Coal Lab Equipment at the Arkwright Laboratory

12. Oven in a Coal Analysis Lab, Probably Arkwright Laboratory

IDNO:
002409
Title:
Oven in a Coal Analysis Lab, Probably Arkwright Laboratory