To eliminate safety hazards keeping them safe for navigation. They periodically insure depth is maintained as per nautical charts.
The symbol for Great Lakes Dredge & Dock Corporation in NASDAQ is: GLDD.
As of July 2014, the market cap for Great Lakes Dredge & Dock Corporation (GLDD) is $431,272,206.40.
The Great Lakes
a dredge is something they use to dredge the sea floor and then that sand is added to the beach for nourishment.
Great Lakes
The Great Lakes are located in eastern North America. The Great Lakes are the largest group of freshwater lakes and are to the northeast of Texas.
Because they are
because the lakes are big
The Great Lakes are freshwater.
The Iowa Great Lakes
The Great Lakes
The Great Lakes are a collection of five freshwater lakes, The Great Salt Lake is one saltwater lake. The Great Lakes are much larger than the Great Salt Lake. (The Great Lakes cover 80,545 square miles, the Great Salt Lake covers between 1,000 and 3,000 square miles, depending on the rainfall.)