Dominion Atlantic Railway Bear River Bridge
09 January 2012 3:17pm
The top hammer drill, powered by compressed air supplied through
a hose from a compressor on the barge, begins drilling into rock.
Dominion Atlantic Railway Bear River Bridge
09 January 2012 3:17pm
The top hammer drill, powered by compressed air supplied through
a hose from a compressor on the barge, begins drilling into rock.
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