Best Answer: In the most common form of atomic bomb uranium 235 is split by striking it with a low energy neutron. Generally the heavier an element the easier it is to split its atom (fission).
Grainger's headquarters is located in Lake Forest, Illinois.
Caterpillar Inc. is moving its headquarters to the Chicago area and wonât build a new complex in downstate Peoria, where it has been headquartered for decades. The move comes as the company faces a weak equipment market that has been cutting into its bottom line.