Cox Station Quarry is located 11 kilometres upstream of the Abbotsford Mission Bridge on the North Side of Sumas Mountain in Abbotsford, British Columbia. Originally referred to as Cox Landing, the site dates back to the early 1900’s when it was used as a landing for paddle wheelers. In the 1940’s and 1950’s CN Rail operated a mine on the site, extracting aggregate for railway construction.

Readily exhausted, the original aggregate shipped from Cox Station was produced from an alluvial deposit of sand and gravel. As of 1987 Cox Station Quarry produces aggregate from drilling and blasting granite, granodiorite, and quartz diorite of the Jurassic-Cretaceous aged Coast Plutonic Complex.

Owned and operated by Mainland Sand and Gravel, the aggregate at Cox Station is a 100 percent fractured material produced by drilling and blasting solid rock. After crushing, the products are transported by a conveyor to the barge loading facility on the Fraser River. Over 95 percent of the material produced is shipped by barge, with most of that being sent to the Mainland Sand and Gravel distribution depots along the Fraser River. Products include quarried road base, clear crushed rock, rip rap, washed sand, septic sand, and landscape armour rock. Production and shipments are typically 2 to 3 million tonnes per year (Exploration and Mining in British Columbia 2014). The current permitted reserves put the lifespan of the Cox Station Quarry in the 50 or more year range.

Mainland Sand and Gravel was acquired by Summit Materials on September 4, 2014.