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A 'barrow loader' stacked 30 green bricks in a barrow. The 'pusher outer' wheeled the green bricks to a 'hack' where they would dry off. The hack would contain 1000 bricks stacked on boards, seven courses high. These were dried for 5 weeks losing about 2 pounds (0.91 kg) in weight- these were now called 'white bricks'. [6]
A stock or stock board is an iron-faced block of wood fixed to the surface of the moulder's bench. The brick mould fits over the stock; the brick maker fills the mould with prepared clay and cuts it off with a wire level with the top of the mould, before turning out the 'green' brick onto a wooden board called a pallet for drying and firing. [1]
Clay pit in Britain. A clay pit is a quarry or mine for the extraction of clay, which is generally used for manufacturing pottery, bricks or Portland cement. Quarries where clay is mined to make bricks are sometimes called brick pits. [1] A brickyard or brickworks is often located alongside a clay pit to reduce the transport costs of the raw ...
A mining simulator is a type of simulation used for entertainment as well as in training purposes for mining companies. These simulators replicate elements of real-world mining operations on surrounding screens displaying three-dimensional imagery , motion platforms , and scale models of typical and atypical mining environments and machinery.
A bell pit was a type of coal mine in which coal found close to the surface was extracted by sinking a shaft and removing coal from around it until the roof became unstable. It was then abandoned and left to subside. [5] Bind. A term used in various areas to refer to shale, mudstone, clay or sandstone overlying the seam. Bituminous coal
English China Clays was incorporated in April 1919 through the amalgamation of three of the largest producers: Martin Bros.(established in 1837), West of England China Clay & Stone (1849) and the North Cornwall China Clay Company (1908). [1] The three companies accounted for around half the industry's output at the time. [2]
The HUI-gold ratio is an expression which compares the relative quantities of the NYSE Gold BUGS Index and the price of gold. The ratio is calculated by dividing the value of the NYSE Gold BUGS Index by the price of gold. [5] Investors use the HUI-gold ratio to illustrate the ever-shifting relative strength of the gold stocks versus gold. [6]
On January 25, 1879, the company became a public company via an initial public offering on the New York Stock Exchange, the first mining stock ever listed. It grew to be the largest gold mine in the United States. [1] In 1910 and 1917, the company established hydroelectricity plants. They were sold to the city of Spearfish, South Dakota in 2004 ...