The common type of stone used for railway ballast is:
ABasalt or trap granite
BMarble
CSlate
DSand stone
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Related Questions:
The flow of rail metal due to abnormally heavy loads is called:
The rail of the main railway track which meet the point rail at the nose of crossing is known as:
......................................... are the rails provided to guide the wheel flanges
The railway station in which lines from three or more directions meet together is called:
Creeping of rails can be checked by