This painting depicts a shallow interior tunnel, four miners, and the strata of the pit mine in the background. This painting depicts a shallow interior tunnel, four miners, and the strata of the pit mine in the background. The artwork is one of three paintings (PDP02285, PDP02286, PDP05612) created by the commercial artists cooperative, Western Canadian Brotherhood, that replicate three of twelve murals created for the 1939 Golden Gate Exposition in San Francisco. The Ministry of Trade and Industry commissioned the murals and the three reproductions. Created in the style of Mexican mural artists and US Works Progress Administration artists, the murals depict the industries of 1930s British Columbia. Artist E.J. Hughes, Paul Goranson, and Orville Fisher designed the paintings together to ensure consistency. This painting was designed by Goranson and painted by Hughes.