Dan has been leading the exploration of the flooded mine, known as the Tilly Foster Mine for two years. The iron ore mine was began in 1810 and continued operation until 1897. At it's zenith, the operation employed hundreds of workers, and at the time was the largest and deepest open pit on Earth, with a maximum depth of 725'. There are many side tunnels that go for hundreds of feet, and during the exploration, the crew discovered a series of tunnels, and explored them and ran fixed nylon lines with appropriate line arrows throughout the system. The open pit has been filled in by half over the century since it's closing, both by natural and man made debris. The mine is spring fed from as of yet unknown origin, but it did flood in the the late 1800's as New York state build a reservoir near the mine site itself. With little flow, the water remains particularly clear below 125', beyond any algae bloom. Water temperatures remain at or near 42 degrees fahrenheit year round, while it warms during the summer shallower than 40', the depths remain the same always. The diving at the mine is not for the faint at heart, as it's bone numbing cold, very deep and absolute pitch black below 80' in depth, with black as coal silt covering everything, with easy silt outs with the slightly errand fin stroke. Dan and his partner and dive buddy, John Eells, have concluded that one more season of exploration is called for, as they have an agenda that includes finding outside tunnel entrances and sumps, locating victims tossed into the mine and further exploration of the wreckage pit that begins at 195'. The mine remains in private hands and is closed to the public.