The Morden mine operated on part of the Douglas Seam which occurs in the Early Campanian Newcastle Member within the Upper Cretaceous Pender Formation, Nanaimo Group. The seam strikes northwest and generally dips shallowly to the northeast. The Douglas Seam is highly volatile, bituminous rank coal and varies in thickness from 0.1 to 9.1 metres and averages between 1.5 to 1.8 metres. The seam is underlain by undulating shales and is overlain by conglomerate to shale and sandy shale.

The Morden mine opened in 1912 and operated between 1913 to 1921, then was shut down and re-opened for one year in 1930. The Morden mine was owned by Pacific Coast Coal Mines Ltd., which consisted of the Morden, Fiddick (092GSW034) and Suquash (092L 067) mines. Production for the Morden mine in 1917 is combined with the Fiddick. The mine was closed between 1921 and 1930. The shaft was re-opened briefly, in 1930, by Canadian Coal and Company, Ltd.; it produced a little over 3000 tonnes.