Environmental Services

A crane is a type of machine, generally equipped with a hoist, wire ropes or chains, and sheaves, that can be used both to lift and lower materials and to move them horizontally. It is mainly used for lifting heavy things and transporting them to other places. It uses one or more simple  machines to create mechanical advantage  and thus move loads beyond the normal capability of a human. Cranes are commonly employed in the transport  industry for the loading and unloading of freight, in the construction  industry for the movement of materials and in the manufacturing industry for the assembling of heavy equipment. 

Polyethylene (abbreviated PE) or polythene  (IUPAC name polyethene or poly(methylene)) is the most common plastic. The annual global production is approximately 80 million tonnes.^[1] Its primary use is inpackaging (plastic bag, plastic films, geomembranes, containers including bottles,.

(Electrical Engineering) a metal strip terminating in a series of sharp points, attached to the highest part of a building, etc, to discharge the electric field before it can reach a dangerous level and cause a lightning strike...........[........]...