Mine Design, Operations and Closure Conference

2021 Schedule

Schedule last updated 5/4/2021

Sunday, August 22, 2021

Short Course

Developing Cost Estimates for Mine Reclamation & Closure

Scott Stebbins, PE, Aventurine Engineering

  • 8:30 am - 4:30 pm
  • Cost:  $145
  • Breakfast & lunch provided to all attendees
  • Attendees should bring either a calculator and paper or a laptop.

Participants will learn the methods, calculations, resources, and procedures needed to design efficient reclamation plans and to estimate the related costs. In the morning session, participants will learn how to calculate many of the engineering-based parameters associated with reclamation site work. In addition to material volume calculations, attendees will determine equipment cycle times, gauge the volumes of supplies needed for water treatment, and understand methods of estimating the amount of material re-handled during slope reduction work.  Participants will also work to solve any specific problems identified by participants at their own project sites. In the afternoon, the course will focus on more common site work needs, such as machinery and structure removal, shaft and adit closure, and waste disposal.  Sources of technical and cost information will be discussed and attendees will work through examples of bond cost estimates. Most of our efforts will be directed toward arriving at these values through a ground-up approach, but we will review software options for cost estimates and bond calculations as well.

Note:  This is a hands-on class.  Students will be expected to solve several problems associated with site-work and should bring either a calculator (nothing fancy) and paper, or a laptop.

Monday, August 23, 2021

Field Trip

Beal Mountain Mine

Beal Mountain Mine is a former open pit cyanide heap-leach gold mine located 10 miles southwest of Fairmont Hot Springs in the headwaters of German Gulch Creek, a tributary to Silver Bow Creek and the Upper Clark Fork River. With a filing of bankruptcy in 1998 and subsequent exhaustion of the reclamation bond funds, the Forest Service became the lead agency responsible for final mine closure.

The tour will highlight several of the significant environmental issues still being addressed, including:

  • Continued infiltration and contamination of water into the leach pad and waste rock dump
  • Treatment and disposal of excess leach pad solution
  • Geotechnical stability of the open pit highwall and leach pad containment dike
  • Long-term geochemical reactivity of mine wastes including potential acidity and release of selenium into the environment
Tour Guides
  • Sonny Thornborrow, USFS On-Scene Coordinator
  • Mary Beth Marks, USFS Geologist
  • Randy English, Tetra Tech Water Treatment Engineer
  • Jim Maus, Tetra Tech Project Manager

Corn Hole Tournament

Water Environmental TechnologiesJoin us for the first-ever conference corn hole tournament, sponsored by Water & Environmental Technologies.

  • Cost is $10 per person.
  • Register online or the day of the event beginning at 6:30 pm.
  • Draw for teams at 7:00 pm and start throwing at 7:30 pm.
  • 2 free drink tickets per player (beer/wine).  Cash bar for spectators.  Light snacks for ALL. 
  • Cap at 44 players.  Single loss elimination. 
  • Prizes:  
    1. 1st - $75 cash plus swag
    2. 2nd - $50 cash plus swag
    3. 3rd - $25 cash plus swag

Tuesday, August 24 – Thursday, August 26, 2021

General Session