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David Milne
David Milne came up with the idea of a machine that could measure seismic activy. -
Robert Mallet
Robert Mallet proposed the theory that earthquakes moved outward from a main point, or focus. -
Grove Gilbert
Grove Gilbert made the discovery that earthquakes happen on a fault line. -
First U.S seismograph
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Giuseppe Mercalli
Made a machine that measured the intensity of an earthquake. -
Harry Reid
Harry Reid made a hypotheses that earthquakes were caused by built up pressure on faults. -
Andrija Mohorovii
Andrija Mohorovii the Moho boundary, a boundary between the Earths crust and the mantle -
Charles Richter
Charles Richter created the Richter scale, a scale that measures the intensity of earthquakes.