Pit prop
Encyclopedia
A pit prop or mine prop (British and American usage, respectively) is a length of lumber used to prop up the roofs of tunnels in coal mines.
Canada
traditionally supplied pit props to the British market. As coal mining declined in importance and metal supports were used, the term became infrequently used.
Though it was merely a log cut to a particular length, it was classified as a finished product and so got around the extra Canadian tariffs on the export of raw lumber.
Because of the large quantities exported, it is probable many ended up in British pulp mill
s.
Canada
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...
traditionally supplied pit props to the British market. As coal mining declined in importance and metal supports were used, the term became infrequently used.
Though it was merely a log cut to a particular length, it was classified as a finished product and so got around the extra Canadian tariffs on the export of raw lumber.
Because of the large quantities exported, it is probable many ended up in British pulp mill
Pulp mill
A pulp mill is a manufacturing facility that converts wood chips or other plant fibre source into a thick fibre board which can be shipped to a paper mill for further processing. Pulp can be manufactured using mechanical, semi-chemical or fully chemical methods...
s.