Simplify the following text for a Grade 10 native English-speaking person.
Original: He attended the Michigan School of Mines ( now Michigan Technological University ) in 1910 , became a geologist , and worked for Union Oil as Manager of Lands and Foreign Exploration helping to develop the first wells in Mexico and Venezuela .
Simplified: He attended the Michigan School of Mines ( now Michigan Technological University ) in 1910 , became a geologist , and worked for Union Oil as Manager of Lands and Foreign Exploration . He help build the first wells in Mexico and Venezuela .