Construction of a bigger dam to contain waste rock from the East Boulder platinum and palladium mine in south-central Montana continues. The owner, South African company Sibayne-Sillwater, says the dam will be engineered and monitored to the strictest standards required under U.S. law and permitting. It would only fail if there was 47 inches of precipitation in 24 hours or a 7.5 earthquake both of which are unlikely. The 1959 Hebgen Lake earthquake was 7.2.
In: News Headlines