So while it’s true, as per Karl’s report that 1000 workers were involved in this project, it wasn’t to construct the largest pulp and paper mill, in fact, that was never the plan. Grand Falls is the largest waterfall east of Ontario’s Niagara Falls, and the power from the waterfall was harnessed to generate electricity. The project was completed in 1931 and included a tunnel dug 26 feet across and a half-mile long, 200 feet beneath the town of Grand Falls, connecting the dam to the four turbines generating about 66 megawatts (89,000 h.p.).