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  • SME
    BORON - Its Past, Present And Future ? Summary

    By D. S. Dinsmoor

    Boron, estimated to comprise about 0.001 percent of the earth's crust (Fleischer 10), as an element is never found free in nature, although its compounds are found in many localities. the bora

    Jan 1, 1958

  • SME
    Investigating Strength Anisotropy of Plain and Steel Fiber Reinforced Shotcrete - Mining, Metallurgy & Exploration (2023)

    By Muhammad Azeem Raza, Muhammad Zaka Emad, Muhammad Usman Tahir, Saqib Ahmad Saki, Muhammad Usman Khan

    Shotcrete is a key initial rock support component used in underground mining and civil projects. The strength of shotcrete plays a vital role in providing and deciding the support adequacy. The streng

    Dec 26, 2022

  • SME
    Concentradora ?Do[n]a Aida? Design, Construction And Operation Costs

    By Adrian C. Dorenfeld

    Concentradora "Dana Aida" (100 t/d capacity) was built in 1971-1972 to treat dumps and ores containing mixed oxide-sulfide copper-gold-silver minerals from two veins. The veins, Don Felipe and aria ar

    Jan 1, 1979

  • SME
    Cost And Production Analysis For Haulback Contour Mining

    By J. H. Gasper

    A cost analysis for two alternative contour mining methods is performed to compare their results. The methods evaluated are: 1) Front-End Loader/Truck Haulback and 2) Scraper Haulback. Before performi

    Jan 1, 1992

  • SME
    Testing For Autogenous And Semi-Autogenous Grinding - A Designer's Point Of View ? Introduction

    By D. J. Barratt

    The application of autogenous and semi-autogenous grinding circuits in recent years has contributed toward substantial savings in capital and operating costs compared to conventional circuits, particu

    Jan 1, 1985

  • SME
    Ground Support Systems for Heavy, Squeezing Ground at Burgin Mine

    By Donald O. Rausch, William E. Hawkes, Odin Jr. Strandberg

    INTRODUCTION Kennecott Copper Corp.'s Tintic Div. Burgin mine is a 725 t/d (800 stpd) lead-zinc producer, located in the east Tintic mining district, 5.6 km (3.5 miles) east of Eureka, and 130

    Jan 1, 1982

  • SME
    A Framework for Detecting and Extracting Discontinuities Based on Machine Learning

    By Jianbo Hu, Tao Zheng, Zhao Qihua, Rui Su

    Rock mass discontinuities play a significant role in evaluating the stability of rock slopes. It is necessary to collect and analyze these discontinuities to fully understand the mechanical and deform

    Nov 6, 2022

  • SME
    Advancements in Removing Fluorine from Copper Concentrate - Mining, Metallurgy & Exploration (2023)

    By Shangyong Lin, Wei Sun, Weiping Liu, Muhammad Azam, Junfeng Chen, Yujie Zhao, David Asubonteng, Michael Ngoie

    Copper concentrates are widely used in smelting operations worldwide and typically consist of chalcopyrite ( CuFeS2) as the primary mineral, with chalcocite ( Cu2S) and bornite ( Cu5FeS4) as secondary

    Aug 2, 2023

  • SME
    Local-Level Permitting Problems In Colorado's Aggregate Industries ? Introduction

    By Stephen D. Schwochow

    Aggregate producers nationwide well recognize the numerous problems often faced in securing local approval to open and operate new gravel pits and rock quarries. Similar problems are faced in Colorado

    Jan 1, 1982

  • SME
    Effect Of Cycle Time On Work Done By The Pistons During Hydraulically Actuated Clamshell Dredging

    By B. A. Osei

    Research to evaluate possible metrics for predicting dredgeability of compact aggregates, by hydraulically actuated clamshell dredges, shows work done by the pistons as a viable metric. Analysis of fi

    Jan 1, 2011

  • SME
    Mine Accident Liabilities -- Planning For Prevention

    By T. M. Biddle

    If an accident occurs at a mine, the mining company, its parent and affiliates, and its supervisory employees may face substantial -- and sometimes unexpected -- liabilities and costs. This presentati

    Jan 1, 1986

  • SME
    Recovery of Gold from Shanono Gold Ore Deposit Using α-Cyclodextrin "Mining, Metallurgy & Exploration (2020)"

    By A. M. Anthony, A. Y. Atta, S. S. Magaji, U. Abubakar-Zaria

    There are two major gold recovery methods: the hydrometallurgical technique, which employs cyanide solutions, and amalgamation method, which involves mercury (Hg). These methods present considerable h

    May 5, 2020

  • SME
    New Water Supply—Oslo - RETC2023

    By Ingunn Opland, Silje M. Tinderholt

    Drill and blast project in Norway’s capital. The contract consists of 7 rock caverns (350–950 m2), 9.2 km tunnels, and four shafts. With 110 blue-collar and 31 white-collar, the project produces an av

    Jun 13, 2023

  • SME
    Investigation Into Conveyor Fires And Experience With Protective Devices At Inco Limited

    By Jozef S. Stachulak

    INTRODUCTION Conveyor belt fires represent a serious hazard in underground mines. This fact is well understood in most mining countries. The statistical data for Ontario mines (1) indicates that

    Jan 1, 1991

  • SME
    An Innovative Method of Gob‑Side Entry Retaining to Control the Non‑collapse Behaviors of Hard Roofs: a Case Study - Mining, Metallurgy & Exploration (2023)

    By Lei Zhang, Zhibo Ma, Pingye Guo

    The mechanical behavior of hard roofs often leads to significant deformation and strong mine seismicity in gob-side entry retaining (GER) of the longwall mining, affecting the mining safety and effici

    Aug 14, 2023

  • SME
    George A. Fox Conference focuses on the future of the industry

    "During his presentation at the 2016 George A. Fox Conference about the history of public-private-partnerships (PPP) in the tunneling and underground construction industries in New York, Vincent Tirol

    Apr 1, 2016

  • SME
    Fatal Accident Analysis and Hazard Identification in Turkish Coal‑Extracting Industry Using Analytic Hierarchy Process - Mining, Metallurgy & Exploration (2024)

    By Arif Emre Dursun

    The aim of this study is to present hazard classifications of location, type, and causes of accidents in Turkish coal-extracting industries using Analytic Hierarchy Process (AHP). In this study, fatal

    Dec 30, 2023

  • SME
    Direct Cyanidation and Roasting Combination of a Semi-Refractory Massive Sulfide Ore

    By P. Karimi, A. Akcil, A. Amini, H. Abdollahi

    "In this study, cyanidation experiments were carried out on a massive sulfide ore sample, whose grades of the precious metals gold and silver were found to be 4.2 g/t and 311.9 g/t, respectively. Othe

    Jan 1, 2015

  • SME
    The 1889 Johnstown Flood: Applying Risk-Informed Decision Making to a Preventable Disaster - SME Annual Meeting 2026

    By Alistair James, Mo Shahsavari, Leon Botham

    The 1889 Johnstown Flood, which killed 2,209 people, was a preventable disaster stemming from systemic decisionmaking failures. This paper applies modern Risk-Informed Decision Making (RIDM) framework

    Feb 22, 2026

  • SME
    Formal Assessment and Measurement of Data Utilization and Value for Mines Mining, Metallurgy and Exploration

    By M. Mustafa Kahraman, Sean Dessureault, W. Pratt Rogers

    Most contemporary mines have considerable amounts of data. Structured and unstructured large data sets are colloquially named big data. Much of the data in mining operations come from a variety of sys