3. For what reason is Howard Hughes, Sr., an important figure in Texas history? (1 point)
He invented the two-cone rotary drill bit for easier oil-drilling in hard rock.
He revolutionized the aviation industry by founding the Hughes Aircraft Company.
He was the father of Howard Hughes, Jr., and created the fortune his son inherited.
He revolutionized the farming industry by inventing new plowing methods.
1 answer
He invented the two-cone rotary drill bit for easier oil-drilling in hard rock.