Proponents of a controversial limestone quarry in Parleys Canyon got their mining permit on Monday, but with conditions attached that could forestall development for months, if not forever. The ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

Vail-area residents who don't want three open-pit limestone quarries in the foothills of the Santa Rita Mountains will host a forum later this month to rally more opposition. Meanwhile state officials ...

It turns out that the very stones used to build the Alamo came from the San Antonio Zoo. Alamo officials on Thursday confirmed that limestone from a historic quarry that once existed at the zoo’s ...