machine is any device that only requires the application of a single force to work. Work is done when a force is applied and results in movement over a set distance. The work done is the product of the force and the distance. The amount of work required to achieve a set objective is constant, however the force required to do this can be reduced provided the lesser force is applied over a longer distance.

Sheep shearing, typically just called shearing, is the process by which the woolen fleece of a sheep is removed. it is done with the help of the Shearing Machine. Typically shearing occurs once per year per sheep.

Tunnel Boring Machine (TBM) are used to excavate tunnels with a circular cross section through a variety of geologies. They can be used to bore through hard rock or sand and almost anything in between. Tunnel diameters can range from a metre to 15 metres. The two biggest were built in 2005 to dig two tunnels for the same urban project in Madrid. Dulcinea and Tizona, as they were called, have diameters of 15 metres.

Tunnel boring machines are used as an alternative to drilling and blasting (D&B) methods. A TBM has the advantages of not disturbing surrounding soil and producing a smooth tunnel wall.