Trench shovels were used for maintaining a defensive fighting position.It was also for after a war was over they bared there dead a trench shovels was handy in this type of situation.Trench shovels are very short and they were light weighted.
Some constructing machines use shovels such as a bulldozer.Bulldozers get ride of the big amounts of dirt so rocks or floor tiles could cover it. The bulldozer was made in 1904.
Scientist are wanting to know other stuff from other plants.Scientist send many of robots to space.Some types of robots just like the Mars Rover. The Mars Rover uses a shovel to pick up material from the ground Then the Mars Rover brings it back to the Scientist so they can analyze the dirt from the ground. This is how scientist learn more about the planets ground.