Article from the OH&S Canada Magazine
By: Jason Contant
On the morning of September 5, 2008, a plumber was called to A-1 Mushroom Substratum Ltd. in Langley, British Columbia for the second time in as many days. There, he found an intake pipe at the bottom of a pump shed completely blocked and informed a supervisor at the mushroom composting facility that a company with expertise in sewer pump-out would be needed.