|  By Andrew Fried, SAFE President  | April 20, 2015 The game has changed when it comes to the dispute over whether Cemex will proceed with its plan to mine 56 million tons of aggregate from a site in Soledad Canyon just outside of Santa Clarita city limits. That much, at least, has been assured by the dueling letters between Cemex and the Bureau of Land Management. For the better part of two decades, local observers — including our organization,…