Complex sentence: It was designed and financed by Dr Fred Stark Pearson, an American engineer with extensive British financial backing, and took over 1,500 men, mostly Mexicans with experience building other dams for Dr Pearson, two years to build the dam while working 24 hours a day.
Split into simpler sentences: It was designed and financed by Dr Fred Stark Pearson, an American engineer with extensive British financial backing. The construction took over 1500 men, mostly Mexicans with experience building other dams for Dr Pearson, two years to build the dam while working 24 hours a day.