Menu Expand Menu Close
Back to Top
Filter Search Expand Close Filter
Search Expand Search Close

Search Constraints

Start Over
You searched for: Topical Subjects Coal mines and mining--Safety measures. Remove constraint Topical Subjects: Coal mines and mining--Safety measures. Topical Subjects Coal miners. Remove constraint Topical Subjects: Coal miners. Topical Subjects Coalbed methane--Testing. Remove constraint Topical Subjects: Coalbed methane--Testing. Topical Subjects Coal Mines and Mining. Remove constraint Topical Subjects: Coal Mines and Mining.
1 entry found
Number of results to display per page

Search Results

A man stands in the mining shaft holding an instrument to test the gas levels in the mine.

1. Testing for Gas in a Pittsburgh Seam Coal Mine

IDNO:
001781
Title:
Testing for Gas in a Pittsburgh Seam Coal Mine
Description:
A man stands in the mining shaft holding an instrument to test the gas levels in the mine.