P Q University Lesson 4

 · Blasting is heavily regulated and watched by federal state and local agencies In terms of processing blasting is the critical first step in the rock fragmentation process Maximum profitability depends largely on an optimized blast Consider that drilling and blasting are the first operations performed in any hard rock quarry operation

Quarry systems audit guide

Quarry systems audit – guide Page 10 of 27 3 Blasting Practices Blasting Practices Point Standard Guideline 3 1 Blasts are planned and designed to ensure good blast results ie good fragmentation displacement of muck pile and looseness Intent To verify that blast parameters such as burden spacing instantaneous charge and stemming

Best practices Drilling and blasting Pit Quarry

 · Larry Mirabelli senior manager at Buckley Powder Co teamed with Bill Hissem senior mining engineer at Construction to deliver a presentation on drilling and blasting at the 2015 Quarry Academy hosted by Dyno Nobel and Mirabelli who has more than 40 years of experience in explosives technology between Buckley Powder and Dyno Nobel discussed a concept

Drilling and blasting

Quarrying of Stones Its Methods Selection of Site Preparation Steps

21 Blasting Operations

21 70 Posting warning procedures RETURNING TO THE BLAST SITE 21 71 After the blast 21 72 Electrical blasting 21 73 Misfires MISFIRE PROCEDURES 21 74 Blast site examination 21 75 Unfired explosives 21 76 Removing loose material 21 77 Marking and detonating 21 78 Safety fuse reblast 21 79 No relighting 21 80 Drilling for refiring 21 81


DRILLING BLASTING OPERATIONS Date Initiated June 7 1993 Dates Modified Updated June 26 2013 April 24 2008 January 4 1999 February 3 1994 October 28 1993 PROCESS DESCRIPTIONS Some mineral product industry quarry locations require rock drilling and blasting to loosen desired aggregate deposits


The operator may appoint a contractor the blasting contractor to carry out some or all of the explosives work The operator is nevertheless always responsible for the overall management of the quarry and safe use and security of explosives The operator is similarly responsible for the shotfiring operating procedures and blast

Guidance Note QGN10

This Guidance Note QGN10 is provided to assist competent persons in the safe and secure storage use and transport of explosives within the Queensland mining and quarrying industries The note provides information to be considered during the risk management process to assist in determining acceptable surface blasting practices

safety precaution in blasting of quarrying stone

Quarry design – HSE Information about health and safety at work On this site the geotechnical features preclude the use of open faces for blasting use of other precautions safety in higher risk areas in quarries More detailed

Draft Safe Quarry Guidelines to the Safety Health and

These Guidelines on the Safety Health and Welfare at Work Quarries Regulations 2005 were developed with the assistance and advice of a Working Group on Quarrying Safety representative of a wide range of interests in the quarrying industry The Health and Safety Authority wishes to express its grateful appreciation to the members of the Group


Quarrying Process Quarry Products Page 2 of 8 After the face profiling survey the drilling contractor arrives Using an air operated drilling rig he drills the number of shot holes required at the marked spots corresponding to the hole positions on the blast design at the angles and depths required After the shot holes have been drilled they are surveyed to


EMERGENCY PROCEDURE FOR A QUARRY Page 5 of 15 A 2 Incident Controller Assess the scale of the emergency Ensure that emergency services have been alerted if required Ensure that a company representative meets the Ambulance Fire Brigade ate the site entrance with sentries along the route to direct them to the incident scene

Controlling the Adverse Effects of Blasting

Controlling the Adverse Effects of Blasting This module addresses the control of offsite impacts that result from blasting namely vibrations airblast and flyrock Much of the information in the module is derived from the Surface Mining Control and Reclamation Act of 1977 SMCRA The performance standards apply to all

Drilling and Blasting

This section looks at all aspects of drilling and blasting and the use of explosives at Quarries and covers profiling of the Quarry face and tracking of drillholes the preparation of shotfiring rules the appointment and necessary competence of the explosives supervisor shotfirer and driller and the specific responsibilities they have including their statutory duties


When site conditions and blasting procedures indicate that there is the potential for the migration and accumulation of gases the Contractor should specify information collection activities modification of blasting procedures and an action plan in the event of a high reading or alarm


procedures including pre blast and emergency notification If an electrical storm approaches during blasting preparation the Blasting Contractor will follow the appropriate regulatory procedures and delay or reschedule the blast as necessary The Blasting Contractor will use a signaling system to alert workers of an impending blast

A citizen s guide to mine blasting Why Blasting

formations blasting remains the only method capable of efficiently producing the large volumes of materials required to meet the needs of our society Blasting is an evolved science born from many years of research and effort Modern explosive products and techniques are available to assist the blaster in designing safe blasts that protect the

SUBJECT Blasting Notification Requirements for Quarries

Quarry Handbook Section 5 Blasting WVDEP 5 2 SUBJECT Pre blast Surveys DATE November 1 2001 Revised 09 01 06 Legal Authority 22 4 12 22 4 3 19 38 3 6 6 Persons Approved to Conduct Pre Blast Survey The insurance carrier who has indemnified the operations under provisions of

Pit and Quarry Guidelines

5 Every person responsible for the operation of a quarry shall conduct a pre blast survey of all structures within 800 m of the point of blast This survey should be conducted with Nova Scotia Environment and Labour s Procedure For Conducting a Pre Blast Survey

Quarrying of Stones Its Methods Selection of Site

Quarrying of Stones by Blasting This method consists of using explosives for breaking stones from very hard rocks It has been observed that quarrying of granites basalts traps quartzites and sandstones by wedging and other methods is very laborious and costly

JAn 203 1 of 21 Surface Blasting Safety Procedures

oitted to Ecellence in Mining Safety Last Modified Page JAN 2013 2 of 21 www coresafety org MODULE 12 C ONT Surface Blasting Safety Procedures Blasting Materials Surface delays detonators or blasting caps boosters safety fuse down line and other explosives used for blasting

Blasting Safety – Revisiting Site Security

In addition to mitigating blasting hazards this procedure aids in providing additional time for clearing dust smoke and fumes from the underground workings For surface coal mines 30 CFR § 77 1303 h requires that All persons shall be cleared and removed

Explosives Shotfiring Workplace Procedure Agg

The Explosives Procedure outlines the duties of a responsible manager and an explosives supervisor It explains what is required in a blasting specification and in shotfiring rules There are example documents for preparing a blast design

Quarry Design

Guidance Note on Quarry design in relation to excavations and tips QNJAC Geotechnical Face Stockpile Operations Subcommittee Introduction The requirement for design forms a central tenet of the Quarry Regulations 19991 The term design is used more than 60

Safe Drilling and Blasting for Small Mines

This field booklet contains some simple rules of thumb for quarry managers and supervisors together with some ideas on how best to manage drilling and blasting processes at their site The booklet covers four stages of any blast Planning and scheduling Blast design Drilling Load tie and fire

Safe Drilling and Blasting for Small Mines and

Safe Drilling and Blasting for Small Mines and Quarries Introduction Many small mines and quarries rely on contractors to conduct drilling and blasting at their site Contractors bring a level of expertise in drill and blast that many sites do not have amongst their workforce what you should be managing when it comes to drill and blast

Drilling and blasting

A Safety fuse is essentially a thin strain of gun powder properly wrapped in a cotton thread When ignited it burns from one end to the other end at a fixed speed generally 100 130 seconds per meter One end of such a fuse length is connected to the blasting cap of the primer cartridge


Quarry Handbook General Information WVDEP 1 QUARRY LAW AND REGULATIONS CORRECTION PROCEDURE Any time an application is corrected affected the correction number and date Blasting 22 4 13 22 4 12 pre blasting 22 4 20 a insurance 38 3 6


Blasting in Underground Bituminous Coal Mines The purpose of this program is to review the Safe blasting procedures for shotfirers in underground bituminous coal mines 14 slides Blasting Regulations Covers 29 CFR Part 1910 General Industry 29 CFR Part 1926 Construction BATF and DOT 14 slides Blasting Regulations

Quarry Complaint Procedures

Printable PDF Version of Quarry Complaint Procedures Important Note If you submit a Quarry Event Complaint Form and do not check the box requesting confidentiality the quarry operator may send a representative to your property to discuss your complaint in greater detail to review your property for potential damage or to be present during a quarry blast

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