Lever a place to stand, and I shall move the Earth with it' is a remark of Archimedes who formally stated the correct mathematical principle of levers (quoted by Pappus of Alexandria). It is assumed that in ancient Egypt, constructors used the lever to move and uplift obelisks weighing more than 100 tons. A lever is a beam connected to ground by a hinge, or pivot, called a fulcrum. The ideal lever does not dissipate or store energy, which means there is no friction in the hinge or bending in the beam. In this case, the power into the lever equals
Darcy Lever at Darcy Lever. Darcy Lever had little industry other than the coal mining. Many inhabitants not involved in coal mining found employment on the Manchester Bolton and Bury Canal or in the textile mills of Bolton and Farnworth. Today, that situation still exists with most of the working population commuting out of Darcy Lever to work in Bolton, Manchester and other nearby towns. Darcy Lever was not worked for coal as much as nearby Little Lever due to the fact it lay further off the Irwell Valley fault which had uplifted the coal measures making them easier to work. There