The staple industries are mills for husking rice and for sawing timber, and petroleum refineries.
Other important industries are engineering, sugar-refining (established 1757), meat-preserving, flour-milling, sailcloth-making, soap-boiling, rope and twine-making, tanning, chemical manures-making, wood-sawing, hosiery, biscuit-baking, brewing, distilling and lime-juice making.
In the great fir forests of the north the limit set in respect of cutting down living trees for sawing and export is a diameter of the trunk, without bark, of 84 in.
The industries of Caen include timber-sawing, metal-founding and machine-construction, cloth-weaving, lace-making, the manufacture of leather and gloves, and of oil from the colza grown in the district, furniture and other wooden goods and chemical products.
As soon as possible after felling, logs by sawing into scantling sizes, for if the log is left to dry or season, it is liable on shrinking to split.