Guidelines

Recommended Best Practices for Battery Electric Vehicles in Underground Mining - 2nd Edition

This guideline outlines the recommended practices for using battery electric vehicles (BEVs) in an underground mining environment. It is structured as a specification and can be included in mining companies’ tender documents to mining vehicle original equipment manufacturers (OEMs). It can also serve as a blueprint path forward for OEM research and development efforts. This edition adds a section on operations covering topics such as requirements for emergency response, maintenance, and operator training. It also introduces new material to help those creating a business case for BEVs. The new version also expands the existing charging section to reflect recent technological developments, adds considerations for extreme environments, and provides further discussion on e-stops, master disconnects, and use of dynamic braking. Developed in partnership with Canada Mining Innovation Council (CMIC).

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Determining the Bond Efficiency of Industrial Grinding Circuits

This guideline is for measuring comminution efficiency in global mine operations using the Bond method and comprehensive Bond Work Index. This method allows personnel to quantify and compare relative energy efficiencies and offers a mode of benchmarking to observe energy consumption. It is an essential tool for managing the important business (cost) of grinding.  The guideline first presents the method for Bond Efficiency determination, which applies to most brittle materials in their naturally occurring (unscalped) size distributions being treated in size reduction circuits down to an 80% passing size of the circuit product (P80) of approximately 70 µm. It then outlines the equipment and procedures for rod mill, ball mill, and impact crushing bond work index testing.

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Methods to Survey and Sample Grinding Circuits for Determining Energy Efficiency

This guideline covers surveying and sampling Autogenous Grinding (AG), Semi-Autogenous Grinding (SAG), rod, and ball mill circuits within the normal range of application. The intended application of this analysis is to treat a complete grinding circuit as a singular process block, irrespective of the number of grinding stages or internal classification steps. This approach allows a quick, relatively low-cost assessment of overall grinding circuit efficiency and can identify if more detailed analysis or circuit optimization work is required. Following circuit changes, the same methods can be used to compare the impact on circuit efficiency of varying operating conditions. This approach removes the need to survey internal circuit streams and mass balance around classification stages, greatly reducing labour requirements, survey turnaround time, and costs associated with sampling, sample analysis, and circuit modelling. While the intent of this guideline is not to define a full grinding circuit survey procedure, the techniques described observe industry best practice and can provide a firm starting point to analyze mineral comminution circuits at any required level of detail.

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Mobile Equipment Open Data Consensus Guideline

This guideline aims to create a common industry vision for the seamless access and use of mobile equipment data across the mine cycle. It identifies onboard datasets that should be openly available to equipment owners in a real-time, read-only format. It also identifies an initial list of the open data elements for onboard mobile mining equipment. With ongoing advances in mining technology (e.g. growing numbers of autonomous vehicles and greater connectivity and integration), large volumes of data related to the real-time and historical performance of mobile assets. To extract maximum value from these data, however, field operators need to be able to access them. At the same time, OEMs’ intellectual property rights must also be protected. This common vision, therefore, is needed before any industry-wide technical equipment connectivity standards can emerge.

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Morrell Method for Determining Comminution Circuit Specific Energy and Assessing Energy Utilization Efficiency of Existing Circuits

This guideline condenses the works of the Morrell method for predicting the specific energy consumption of conventional crushing, High Pressure Grinding Rolls (HGPRs) and tumbling mill equipment and applies them to assessing operating comminution circuit performance. Such circuits include combinations of any of the following equipment: Autogenous Grinding (AG) and Semi-Autogenous Grinding (SAG) mills, ball mills, rod mills, crushers, and HPGRs. The guideline reviews the data required for the analysis, including hardness characterization data generated from the SMC Test® and Bond Ball Mill Test Work Index, presents the Morrell equations and their applications, and provides a worked example. Although the Morrell method can be used in comminution circuit design in greenfield projects, this document provides guidelines to use the method to assess the energy utilization efficiency of existing circuits.

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Recommended Best Practices for Battery Electric Vehicles in Underground Mining

This guideline outlines the recommended practices for using battery electric vehicles (BEVs) in an underground mining environment. It is structured as a specification and can be included in mining companies’ tender documents to mining vehicle original equipment manufacturers (OEMs). It can also serve as a blueprint path forward for OEM research and development efforts. The guideline is structured around seven key components. First, at the conceptual stage, it is necessary to determine the charging philosophy, that is, the type(s) of chargers that will be used with the goal of making the recharging and operation of electric equipment as simple, convenient, and safe as refuelling and operating diesel vehicles. Then work can proceed from mine design, through to BEV design, energy storage systems (batteries), charging systems, and performance standards.

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Underground Mine Communications Infrastructure Guidelines Part I: Positioning and Needs Analysis

This is the first part of a five-part guideline suite designed to assist improved communication and digital network infrastructure underground. It provides a general overview of the guideline objectives, audience, and mine communications maturity lifecycle diagram. This diagram provides a high-level overview of the services and supporting technology that is generally used in each phase of the mine lifecycle. The diagram initially shows business services and communications technology on the surface in the exploration phases and then shifts to the underground environment as the site develops.

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Underground Mine Communications Infrastructure Guidelines Part II: Scenarios and Applications

This is the second part of a five-part guideline suite designed to assist improved communications technology and digital network infrastructure underground. It provides scenarios of practical applications in underground mining today and in the near future (e.g. applications for autonomous, semi-autonomous, and remote-control equipment and wireless sensors and communications networks). The scenarios relate how different communications infrastructure designs can be used and combined to achieve key technology goals. The business services design requirements comprise a series of checklists to step through the general tasks and components needed for each phase of underground mine planning and development. The checklist helps mine personnel and contractors identify the appropriate network communications technologies to support required services and solutions.

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