Hauling in enough rock to pile behind a retaining wall that high and that long will be a massive operation. But the closer ...

Never mind that past polls have found that most Minnesotans, including those in northern Minnesota, don’t want mining near ...

Prior to this discovery, the largest underground thermal lake title belonged to a site in Hungary, below Turkish baths in the city of Budapest, Reuters reported in 2008. That lake is 282 feet long, 89 ...