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An iron plantation in the Hopewell Furnace National Historic Site a living history museum in Elverson, Pennsylvania. Iron plantations were rural localities emergent in the late-18th century and predominant in the early-19th century that specialized in the production of pig iron and bar iron from crude iron ore. [1]
The project management triangle (called also the triple constraint, iron triangle and project triangle) is a model of the constraints of project management. While its origins are unclear, it has been used since at least the 1950s. [1] It contends that: The quality of work is constrained by the project's budget, deadlines and scope (features).
Cast iron development lagged in Europe because wrought iron was the desired product and the intermediate step of producing cast iron involved an expensive blast furnace and further refining of pig iron to cast iron, which then required a labor and capital intensive conversion to wrought iron.
For example, although large reserves of iron and copper ores exist in the United Kingdom, these ores are now largely imported – copper ore from Chile and North America, and iron ore from China, Brazil and Australia yield higher grades of metals at lower costs. [15] [16]
Fulbright was born on April 9, 1905, in Sumner, Missouri, the son of Jay and Roberta (née Waugh) Fulbright. [1] In 1906, the Fulbright family moved to Fayetteville, Arkansas . His mother was a businesswoman, who consolidated her husband's business enterprises and became an influential newspaper publisher, editor, and journalist.
Absorption of dietary iron in iron salt form (as in most supplements) varies somewhat according to the body's need for iron, and is usually between 10% and 20% of iron intake. Absorption of iron from animal products, and some plant products, is in the form of heme iron, and is more efficient, allowing absorption of from 15% to 35% of intake.