A steam shovel is a large steam-powered excavating machine designed for lifting and moving material such as rock and soil. It is the earliest type of power shovel or excavator.[citation needed] Steam shovels played a major role in public works in the 19th and early 20th century, being key to the construction of railroads and the Panama Canal. The development of simpler, cheaper diesel-powered shovels caused steam shovels to fall out of favor in the 1930s.
invented by William Henry Perkin
Mauveine, also known as aniline purple and Perkin’s mauve, was one of the…
invented by Hiram Maxim
The Maxim gun is a recoil-operated machine gun invented in 1884 by Hiram…
invented by James Beaumont Neilson
Hot blast refers to the preheating of air blown into a blast furnace or other…
invented by John Bennet Lawes
Triple superphosphate is a component of fertilizer that primarily consists of…
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