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ference rooms. The practical portions of the course took place in a rock gallery using the latest in robotic shotcreting equipment from Normet. It was a very hands-on training session where classroom education was put into practice. The examination consisted of a written exam and evaluation of a nozzleman applying several cubic meters (cubic yards) of concrete using the spraying machine. Having been in several other underground research and training facilities throughout the world, I was accustomed to rather cool meeting rooms (when they existed) and generally more of a mining-like environment. But Hagerbach was climate-controlled to the same standard as you would get in any large office building. There was no need to leave the underground facility for any reason. It contained clean, modern rest- room facilities and even had a large cafeteria where we were served morning coffee, lunch, and afternoon tea. All of the concrete used at the facility, including the shotcrete material, comes from an underground batch plant that is located within the facility. Along with the batch plant is a con- crete testing facility used for QA/QC testing to ensure that the mixture is ready to be shot. Transmixers are used to haul the concrete to the test site or to the shotcreting area, depending on what is being done. The Hagerbach Test Gallery is definitely a one-of-a-kind facility and it is unfortunate for us that it is located so far away. But then again, there are not that many places that are nicer to visit than Switzerland and if you ever have a need to go to Hagerbach, make sure to take a few Dan Millette, a Mining Engi- extra days to visit Lucerne and Zurich while in neer, is the Director of the the area. And if you happen to be in Switzerland Mining and Tunneling Divi- for any other purpose, Hagerbach does offer sion of The Euclid Chemical tours on a regular schedule and it would be Company. He is a member of something to include during your visit. ASA, Chairs the ASA Under- ground Committee, and is References also a certified EFNARC http://www.hagerbach.ch/sites/esite1.htm Nozzleman Examiner. Shotcrete • Spring 2014 17


2014SprShotcreteEMag
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