Lodgepole pine (Pinus contorta), also known as knotty, black, and spruce pine, grows in the Rocky Mountain and Pacific Coast regions as far northward as Alaska. Wood for lumber and other products is produced primarily in the central Rocky Mountain States; other producing regions are Idaho, Montana, Oregon, and Washington.  The heartwood of lodgepole pine varies from light yellow to light yellow-brown. The sapwood is yellow or nearly white.  The wood is generally straight grained with narrow growth rings. The wood is moderately lightweight, is fairly easy to work, and has moderately high shrinkage. It is moderately low in strength, moderately soft, moderately stiff, and moderately low in shock resistance.  Lodgepole pine is used for lumber, mine timbers, railroad crossties, and poles. Less important uses include posts and fuel. Lodgepole pine is being used increasingly for framing, siding, millwork, flooring, and cabin logs.