<Tr> <Th> Known for </Th> <Td> chemistry of explosives </Td> </Tr> <Tr> <Td_colspan="2"> Scientific career </Td> </Tr> <Tr> <Th> Fields </Th> <Td> Chemistry </Td> </Tr> <Tr> <Th> Institutions </Th> <Td> Los Alamos National Laboratory </Td> </Tr>

Who invented the spot test for identifying explosives in the field