Living and working in the mountains of Colorado requires a pair of pants that will keep up with me. I've found them in Carhartt's B11, Washed Duck Work Dungarees.
The first time I work these pants I was knocking standing dead trees over with a skid loader then bucking and hauling the wood through the forest to stack next to a boiler.
Since then I've been hauling wood to my heart's content and running chainsaws, then throwing them on over long underwear and fleece pants on the way to the ski slope. The B11 is a go-anywhere pant that looks good and performs well. These have replaced a previous pair of Carhartt pants that lasted nearly 10 years and I'm confident these will last a similar amount of time.
Links
Carhartt B11 Washed Duck Work Dungarees: http://goo.gl/F1rJGI
More gear reviews: http://goo.gl/0x4zz