RE:RE:Rosemount? probablity? Here's a recent video clip about the Arizona water supply worries. (after the ad).
https://www.azcentral.com/videos/news/politics/sunday-square-off/2014/11/30/19701111/
Lots of water will likely needed to keep the dust down at Rosemont.
Check this web home page for the 256-inch Whipple Observatory about 10 miles from the proposed Rosemont mine.
https://www.sao.arizona.edu/FLWO/whipple.html
The lighting code rules in this area is nothing like in Manitoba.
https://pdsd.tucsonaz.gov/files/pdsd/codes-ordinances/2012_outdoor_lighting_code_.pdf
Note: This is by no means a complete list to worry about. (For a few years now, I am no longer a HBM shareholder)