Duckboards, shoring timbers, crates—anything that needed wood had to be provided. The British government concluded that there was nobody more experienced or qualified in the British Empire to harvest timber than the Canadians.
The British government recognized Canadians as the most qualified and experienced timber harvesters within the British Empire for any task needing wood.  Duckboards, shoring timbers, and crates were just a few examples of items requiring wood, and the British government relied on Canadian expertise to supply them.