Plan: Oxygen Mask

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Manuscript - Plan: Oxygen Mask
Manuscripts
The Aurora Consolidated Mines Company Records, composed mostly of plans and blueprints for mine equipment, appear to be primarily from the mine's metal and repair shop. The collection is composed of one manuscript, a large number of plans and blueprints, one letter, a number of clerical documents, and two pieces of ephemera.
mssAurora mines records
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Plan: Tunnel Set
Manuscripts
1 item
mssAurora mines records
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Plan: Cam Shaft
Manuscripts
1 item
mssAurora mines records
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Plan: Spiral Feeder
Manuscripts
1 item
mssAurora mines records
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Plan: Filler Bar
Manuscripts
1 item
mssAurora mines records
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Plan: Chute "B"
Manuscripts
1 item
mssAurora mines records