Two recommendations for weekend reading. I assume you will have time on a potentially chilly, wet weekend. For what it is worth try these two sites:
The Center for Watershed Protection. They have here a magnificent new e-publication called Manual 3 Urban Stormwater Retrofit Practices. The nearly 300 page volume and appendices are available for free download at the website. All you have to do to get a free e-copy is register and tell them you are downloading a copy-seems a fair bargain to me. I suspect there will be something of interest for you if you are even remotely connected with control of surface water at your mine. Plus take a look at the site of the International Erosion Control Association for more publications relevant to mine surface water management.
The Yellowhead Mining site. I have previously written about first encounters with the folk from this new BC venture. They called me this week to update me on happenings, so I went across ot their site to read up on their summer work and finds. It makes for interestingweekend reading to follow a junior blazing a new path.