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The B&M soon proposed to abandon East Cambridge and Prospect Hill stations in order to realign the ex-B&L into the new North Station. [23] Although the closure of East Cambridge was protested, Prospect Hill had largely been replaced by streetcars to Lechmere station and its closure was unopposed.
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Tile drainage is a form of agricultural drainage system that removes excess sub-surface water from fields to allow sufficient air space within the soil, proper cultivation, and access by heavy machinery to tend and harvest crops.
The [main] field of the drawing, as opposed to other areas of it, such as the parts list , general notes (G/N), flagnotes , title block , rev block , bill of materials (B/M or BoM or BOM), or list of materials . Rationales for drawing changes that are noted in the rev block often use these abbreviations for brevity (e.g., "DIM 14.00 was 12.50 ...
A treadle pump is a human-powered suction pump that sits on top of a well and is used for irrigation. [1] It is designed to lift water from a depth of seven metres or less. The pumping is activated by stepping up and down on a treadle , which are levers, which drive pistons, creating cylinder suction that draws groundwater to the surface.
The Wood Screw Pump is a low-lift axial-flow drainage pump designed by A. Baldwin Wood in 1913 to cope with the drainage problems of New Orleans. Wood's extremely efficient pumps replaced less efficient pumps in the city's drainage system, prior to which the city had experienced chronic flooding problems, bringing diseases such as malaria and ...
It was founded in 1854 by the inventors Philander Higley Roots and Francis Marion Roots. It is notable for the Roots blower, a type of pump. [1] Today, Roots blowers are mainly used as air pumps in superchargers for internal combustion engines; they were first used in blast furnaces to blow combustion air to melt iron. [2]
Industrial tractors had fixed wheel widths, different gearing, foot throttles and usually had wide front axles. The M was produced in Britain as the BM. [6] In the United States, the M was produced in Rock Island, Illinois. Farmall M tractors produced in Britain and Australia were designated the BM/BMD and the AM, respectively.