Mancos River not affected by the mine spill in the Animas River

While the mine spill in Silverton, Colorado has had huge affects on the Animas River, the San Juan, and  Lake Powell, we are very thankful that our river is safe! Mancos is located 30 miles west of Durango and is not in the same watershed.  

Colorado mountains are full of old mines so we need to count our blessings.  What can we learn by this disaster?  How can we seal old mines?  My heart goes out to everyone affected  by the Animas River.