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1. Coal Laboratory Worker on the Telephone

2. Interior of a Coal Laboratory

3. Coal Laboratory Building

4. Equipment in a Coal Laboratory

5. Technician Working at the Arkwright Coal Laboratory

6. Temco Brand Equipment in a Coal Laboratory

7. Equipment in a Coal Laboratory

8. Coal Laboratory Building

9. Equipment in a Coal Laboratory

10. Equipment in a Coal Laboratory

11. Equipment in a Coal Laboratory

12. Equipment in a Coal Laboratory