The earth is filled with valuable resources. Coal, gold and other natural resources were traditionally mined by hand, but larger deposits require heavy-duty machines to crush the rock and reveal the treasure hiding inside. Similar equipment can be used to break up large pieces of ground and asphalt when roads are being built. P.J. Jonsson och Söner AB is the name to trust for mobile crushing plants. The Swedish producer also offers complementary machines that aid in feeding, sifting and measuring to sort out chunks of rock of various sizes, in no time flat.