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The process of making tamahagane continues for 36–72 hours (a day and a half to three days), depending on how many people work and how much metal is to be obtained. Within an hour of smelting, the iron sand sinks to the bottom, called the bed of fire, in which it will be assessed by color to determine which parts of the smelt will be combined ...
The average annual income for a structural ironworker in the early 2000s was 15.85 dollars per hour; however, a full-time structural ironworker could make 30-40 dollars per hour, depending on the location of the work site. [12] The current wages for the Local Union #1 Chicago Ironworkers can be found at the Chicago Ironworkers local union website.
Early Japanese iron-working techniques are known primarily from archaeological evidence dating to the Asuka period (538–710 CE). Iron was first brought to Japan during the earlier Yayoi period (900 BCE to 248 CE). Iron artifacts of the period include farm implements, arrowheads, and rarely a knife blade.
Morioka Domain quickly expanded operations, constructing two more blast furnaces to produce 1125 tons of pig iron per year, using over 1000 workers, making it the largest smelter in Japan at the time. Although most of this iron was intended for weapons production, the domain also produced coinage on behalf of the government. When an order came ...
The cost of commuting, extra pay (such as working on holidays, at night, overtime, etc.) and temporary pays (bonus, tips, etc.) must be paid exclusively and cannot be used to calculate towards the minimum wage. Regional minimum hourly wages are set by the Minister of Labour [7] or the Chief of the Prefectural Labour Standards Office ...
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It takes about a week to build the tatara and complete the iron conversion to steel. When the process is done, the clay tub is broken and the steel bloom, known as a kera , is removed. At the end of the process, the tatara will have consumed about 9.1 t (9.0 long tons; 10.0 short tons) of satetsu and 11 t (11 long tons; 12 short tons) of ...
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