MMMRA1991.127 | Signal codes for the mine cage

 
Panel
Signal codes for the mine cage
Before 1954, 20th century
Metal and wire
50.8 x 30.4 cm
MMMRA1991.127
This artefact belongs to :© Musée minéralogique et minier de Thetford Mines
Keywords: 
Select Image (Your image selection is empty)

Visitors' comments

Add a comment