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MMMRA1991.128
This artefact belongs to :© Musée minéralogique et minier de Thetford Mines
Panel
Signal codes for the mine cage
Before 1980, 20th century
Metal and wire
62.3 x 30.6 cm
MMMRA1991.128
This artefact belongs to :© Musée minéralogique et minier de Thetford Mines

© Musée McCord Museum