Big Muskie cost $25 million in 1969, the equivalent of $150 million today adjusted for inflation. Big Muskie removed more than cubic yards (m³) of overburden, twice the amount of earth moved during the construction of the Panama Canal, uncovering over 20,000,000 metric tons (20,000,000 short tons) of coal. Its bucket could hold two Greyhound buses side by side. It took over 200,000 man hours to construct over a period of about two years. A wildlife park called The Wilds, which opened in 1994, was created from acres (km²