The Dannemora mine has been in production since (at least) 1481 until its first closure in 1992. The fact that the mine is very old, but also has been closed for some time, has influenced the infrastructure and mine planning during the earlier era of mining.
Jim Hazzard is a geological engineer with a Ph.D. in geophysics. He has extensive experience in software development for geomechanics and he is currently the Software Manager at Itasca Consulting Group, as well as product manager and primary developer for 3DEC.
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