1957 Press Photo Process of blasting harbors out of the Antarctic shelf ice

Black smudges of soot that absorb the sun's rays and gnaw depressions into the ice could make obsolete the slow and costly process of blasting harbors out of the Antarctic shelf ice (top photo). Smudge method was hit upon by an Army-Navy party, equipped w

Photo is dated 1957.

Photo measures 7 x 9.25 inches.

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