Great Lakes are estimated at 900 trillion. The influx of parasitic lamprey populations after the development of the Erie Canal and the much later Welland Canal led to the two federal governments of the US and Canada working on joint proposals to control it. By the mid-1950s, the lake trout populations of Lakes Michigan and Huron were reduced, with the lamprey deemed largely to blame. This led to the launch of the bi-national Great Lakes Fishery Commission. "The Great Lakes: An Environmental Atlas and Resource Book" (1972) noted: "Only pockets remain of the once large commercial fishery." But, water quality improvements realized
The Great Lakes Group The Great Lakes Group The Great Lakes Group (GLG) is an American full-service marine-related transportation company headquartered in Cleveland, Ohio. The Great Lakes Group is the parent Company to The Great Lakes Towing Company, Great Lakes Shipyard, Tugz International L.L.C., Puerto Rico Towing & Barge Co., Soo Linehandling Services, Admiral Towing and Barge Company, and Wind Logistics, Inc. The Great Lakes Towing Company was the first company of The Great Lakes Group, founded in New Jersey on July 7, 1899. Its founding shareholders included Jeptha H. Wade II, John D. Rockefeller, William G. Mather, and James R. Sinclair. T.F. Newman