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david milne
suggest that machines can help record earthquakes -
grove gilbert
discoverd earthquakes seem to happen on a fault/ epicenter -
Giuseppe Mercalli
was a seismologist who created a device to measure the intensity or likelihood of damage that may be caused in an earthquake. -
first seismology graph
Installed at the Lick University, near San Fransisco. -
Mantel
A boundary between Earths crust and mantle was discovered by Andrija Mohorovii -
richter scale
Charles richter creates Richter scale to measure the intensity of Earthquakes.