Large inactive open pit chrysotile asbestos mine that was enlarged by adjoining Southwark mine (possibly others).
Refs.:
GAUDARD, S. (1993) Voyages au coeur des Appalaches. Published by: Musée Minéralogique et Minier de la région de l’amiante, Thetford Mines, Québec, 178 p.
SABINA, A.P. (1967) Rocks and minerals for the collector: Eastern Townships and Gaspé,Quebec and parts of new Brunswick. Geological Survey of canada Paper, 66-51, 170p.