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The Spruce Production Division was a unit of the United States Army established in 1917 to produce high-quality Sitka spruce timber and other wood products needed to make aircraft for the United States' efforts in World War I. The division was part of the Army Signal Corps's Aviation Section.
Sitka spruce has been introduced to Europe as a lumber tree, and was first planted there in the 19th century. Sitka spruce plantations have become a dominant forest type in Great Britain and Ireland, making up 25% of forest cover in the former and 52% in the latter.
Picea sitchensis (Sitka spruce) The largest spruce. The strong wood is used in light aircraft, masts and turbine blades. It is also used in many musical instruments for its resonance. Uses: timber; pulpwood, terpenes [61] [62] —
Douglas-fir is a medium-sized to extremely large evergreen tree, 20–100 metres (70–330 feet) tall (although only coast Douglas-firs, reach heights near 100 m) [10] and commonly reach 2.4 m (8 ft) in diameter, [11] although trees with diameters of almost 5 m (16 ft) exist. [12]
The San Juan Spruce is a Sitka spruce (Picea sitchensis) tree located in the San Juan Valley of Vancouver Island, British Columbia, Canada. Until July 2016 it was the second largest known Sitka spruce tree by volume, [ 2 ] surpassed only by the Queets Spruce in Washington , United States .
The process of manufacturing at the Sitka Pulp Mill consisted of utilizing about 70 percent of Western Hemlock and 30 percent Sitka Spruce. The mill was able to debark logs as large as 1.8 meters in diameter and 7.2 meters in length. The warehouse and dock were able to accommodate 17,000 tons of baled pulp.
Spruce is the standard material used in soundboards for many musical instruments, including guitars, mandolins, cellos, violins, and the soundboard at the heart of a piano and the harp. Wood used for this purpose is referred to as tonewood. Spruce, along with cedar, is often used for the soundboard/top of an acoustic guitar. The main types of ...
The tallest known Sitka spruce grows in the parks. [99] Sitka spruce are plentiful along the coast, better adapted to salty air than other species. Other associated trees are the tanoak, Pacific madrone, bigleaf maple, and California laurel. [100] Huckleberry and snowberry are part of the forest understory.
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