The Arizona Daily Sun (Flagstaff) reports that mining resumed in December at Denison Mine's Arizona #1 mine [right, Arizona #1 headframe. Credit, Denison Mines] in northern Arizona after a 20 year hiatus.The mine is about 10 miles from the northern boundary of Grand Canyon National Park and has been attacked by mining opponents. The Sun does a nice job of summarizing the recent history, nature of the ore deposit, mining and milling processes, and the controversy.