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September 2019

Volume 71 Issue 9

FEATURED ARTICLES

Application of high-pressure grinding roll technology in silver heap leaching T. Howard, J. Bilant, B. Carlson, N. Gow	Preview
Polyurethane protects equipment; Material can protect from high-impact applications
Testing slurry valves for reliability; How one manufacturer tests slurry valves Tim McMahon	Preview
The construction of two small-scale caving mines at La Encantada Mine, Mexico	Preview

TECHNICAL PAPER ABSTRACTS

MME papers now available on Clarivate’s Web of Science	Abstract
Energy dissipation and fragmentation of granite core during high-velocity impact Jeffrey C. Johnson, Sindhoora Puvvada, Ying Lu, Chen-Luh Lin, Jan D. Miller	Abstract
Petromineralogical studies of late Paleocene–middle Eocene phosphate nodules in the Subathu Basin of Solan District, Himachal Pradesh Mohd Shuaib, K.F. Khan, Samsuddin Khan, Shamim A. Dar	Abstract
Assessing the quality of incident investigations and its effect on safety performance: A study of the Ghanaian mining industry Eric Stemn, Maureen E. Hassall, Carmel Bofinger, David Cliff	Abstract
Toward a field-portable, real-time organic and elemental carbon monitor D.A. Parks, K.V. Raj, C.A. Berry, A.T. Weakley, P.R. Griffiths, A.L. Miller	Abstract
Isothermal reduction kinetics and mechanism of pre-oxidized ilmenite Yingyi Zhang, Jie Zhao, Xiaolong Ma, Mingyang Li, Yan Lv, Xudong Gao	Abstract
Influence of air gap volume on achieving steady-state velocity of detonation Eugie Kabwe	Abstract

TUNNELING AND UNDERGROUND CONSTRUCTION

More than 1,400 gather in Chicago for 2019 RETC	Preview
Design and construction procurement for the Amtrak Hudson Tunnel project	Preview
LA Metro Regional connector transit project: Successful halfway-through completion	Preview
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