On This Day - 30 Dec 1986: No more canaries in a coal mine - ´óÏó´«Ã½ Sounds

On This Day - 30 Dec 1986: No more canaries in a coal mine - ´óÏó´«Ã½ Sounds


30 Dec 1986: No more canaries in a coal mine

Avian gas detectors are swapped out for electronic equivalents.

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