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Hewittic Rectifier changes AC to DC current.

1. 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.

2. 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.
A close-up view of a rectifier in the Williams River Mine in Webster County, W. Va. Gauley Mountain Coal Company, Ansted, W. Va. 'Taken by mechanization' written on the front of the photograph.

3. Rectifier at Williams River Mine, Webster County, W. Va.

IDNO:
004526
Title:
Rectifier at Williams River Mine, Webster County, W. Va.
Date:
1949
Description:
A close-up view of a rectifier in the Williams River Mine in Webster County, W. Va. Gauley Mountain Coal Company, Ansted, W. Va. 'Taken by mechanization' written on the front of the photograph.
A close-up view of a rectifier at the Williams River Mine in Webster County, W. Va. Gauley Mountain Coal Company, Ansted, W. Va.

4. Rectifier at the Williams River Mine, Webster County, W. Va.

IDNO:
004529
Title:
Rectifier at the Williams River Mine, Webster County, W. Va.
Date:
1950
Description:
A close-up view of a rectifier at the Williams River Mine in Webster County, W. Va. Gauley Mountain Coal Company, Ansted, W. Va.
A close-up view of rectrifier in Williams River Mine (Webster County), W. Va. Gauley Mountain Coal Company, Ansted, W. Va. 'Taken by mechanization' written on the front of the photograph.

5. Rectifier at Williams River Mine, Webster County, W. Va.

IDNO:
004535
Title:
Rectifier at Williams River Mine, Webster County, W. Va.
Date:
1949
Description:
A close-up view of rectrifier in Williams River Mine (Webster County), W. Va. Gauley Mountain Coal Company, Ansted, W. Va. 'Taken by mechanization' written on the front of the photograph.