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Holman drill, lantern slide
Holman cradle-hammer drill. The Holman C.Hows much to the actual experience of its predecessor under the various conditions of practical mining, and consequently certain details have been modified, and an even more perfect form of maching has been evolved.
Collection Area
Industry
Item Number
87.18I/228
Acquisition
collected officially, 1987
Measurements
Length
(mm): 82
Width
(mm): 81
Material
Glass
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