Search Results
- IDNO:
- 002397
- Title:
- Equipment in a Coal Laboratory
- IDNO:
- 002398
- Title:
- Equipment in a Coal Laboratory
- IDNO:
- 002399
- Title:
- Equipment in a Coal Laboratory
- IDNO:
- 002400
- Title:
- Equipment in a Coal Laboratory
- IDNO:
- 002401
- Title:
- Hewittic Rectifier at Jamison Coal Mine No. 9 Laboratory
- Description:
- Hewittic Rectifier changes AC to DC current.
- IDNO:
- 002402
- Title:
- Hewittic Rectifier at Jamison Coal Mine No. 9 Laboratory
- Description:
- Hewittic Rectifier changes AC to DC current.
- IDNO:
- 002403
- Title:
- Technician Works with Samples at an Unidentified Coal Laboratory
- IDNO:
- 002404
- Title:
- Technician Working in an Unidentified Coal Laboratory
- IDNO:
- 002405
- Title:
- Lab Technicians Perform Tests in an Unidentified Coal Laboratory
- IDNO:
- 002406
- Title:
- Pocahontas Coal Company Laboratory Technician at Work
- IDNO:
- 002407
- Title:
- Coal Lab Equipment at the Arkwright Laboratory
- IDNO:
- 002408
- Title:
- Coal Lab Equipment at the Arkwright Laboratory
