a cement is a binder, a substance used for construction that sets, hardens, and adheres to other materials to bind them together. cement is seldom used on its own, but rather to bind sand and gravel together.cement mixed with fine aggregate produces mortar for masonry, or with sand and gravel, produces concrete.concrete is the most widely used material in existence and is only behind water as .
heon kim using a modern korean composite bow. a composite bow is a traditional bow made from horn, wood, and sinew laminated together, cf. laminated bow. the horn is on the belly, facing the archer, and sinew on the outer side of a wooden core.
hodgdon yachts incorporated as hodgdon shipbuilding, llc and previously known as 'hodgdon brothers' yard is a builder of yachts and specialized military vessels, based in east boothbay, maine. it is a family-run business that was founded in 1816—reputedly the oldest continuously operating family boatbuilder in the united states.
consultancy wood mackenzie estimated that with brent at $25/barrel, 10% of oil production globally would not be able to cover its base operating cost, particularly heavy crude oil producers such as venezuela, mexico and oil sands in canada, where the price dipped below $5 per barrel.
intarsia inlay in wood furniture differs from marquetry, a similar technique that largely replaced it in high-style european furniture during the 17th century, in that marquetry is an assembly of veneers applied over the entire surface of an object, whereas inlay consists of small pieces inserted on the bed of cut spaces in the base material .
fagus sylvatica is a large tree, capable of reaching heights of up to 50 m 160 ft tall and 3 m 9.8 ft trunk diameter, though more typically 25–35 m 82–115 ft tall and up to 1.5 m 4.9 ft trunk diameter. a 10-year-old sapling will stand about 4 m 13 ft tall. it has a typical lifespan of 150–200 years, though sometimes up to 300 years.