T O P

Surface drill rigs | a wide range of machines | Epiroc

Surface drill rigs are used for blast hole drilling in construction, quarrying, and open-pit mining, covering a hole range between 27-229 mm. We offer the widest range of surface drilling equipment on the market, classified into four main product families.

(PDF) ROCK BLASTING FOR MINING - ResearchGate

ROCK BLASTING FOR MINING . ... This diagram shows the drill hole charged with explosives at a ... Control blasting has mainly been used in surface mining operations to minimalize blast damage. To ...

Blast Training Course Guide - Orica Mining Services

Blast Training Course Guide. Duration 4 Hours Who Will Benefit Those on a mine site, or in a quarry or construction blast ... the National Surface Blasting Competencies, Regulations, Codes and Standards. ... Calculating Drill & Blast Costs Optimisation Techniques & Tools Vibration / Airblast / Flyrock

Drill and Blast Method - railsystem

Drill and Blast Method. Drill and blast method is mostly used method for the excavation throughout the world. The method can be used in all types of rocks and the initial cost is lower than the mechanical method like TBM. This tunneling method involves the use of explosives.

Blast Hole Drilling: The Basic Process | RPM Drilling

Blast hole Drilling is a technique used in mining whereby a hole is drilled into the surface of the rock, packed with explosive material, and detonated. The aim of this technique is to induce cracks in the inner geology of the surrounding rock, in order to facilitate further drilling and associated mining activity. ... Drill and Blast 101 ...

Drill & Blast 101 - YouTube

Apr 03, 2013· Gold Mine and Geology 101 Series, Episode 1, Mine Terms - Duration: 20:46. Period Six Mining and Exploration LLC Recommended for you

P&H Blasthole Drills - Surface Mining | Mining Corp.

The P&H rotary blasthole drills are productive solutions for all mine types. When you need to meet your drilling and blasting needs at the lowest cost per meter drilled, these powerful and reliable systems make P&H drills your best choice.

Blaster's Training Module

initiation systems currently in use in blasting operations at surface coal mines. Surface-Blast Design – This module presents recommended blast-design practices for surface-mine and quarry blasting. Blasthole Drilling – This module presents aspects of surface drilling that are important to blasting operations. The purpose of drilling into ...

New trends in drilling and blasting technology ...

May 10, 2007· The developments in the areas of planning and design of blasts, drill monitoring, drillhole deviation, drill machine navigation systems and laser profiling systems have been discussed in this paper. The innovative practices in the areas of bulk loading of explosives, controlled blasting, explosive performance measurement a...

Blast Training International - Manage Drill and Blast ...

Blast Management International Online Shotfirer Training offering shotfirer, shotfirer refresher and blast crew training courses. On this web site you will find online training courses for the relevant RIIBLA units of competency for shotfirer training and blast crew training. Online shotfirer refresher training is for existing shotfirer licence holders, this course is required every five years ...

APPENDIX B Blasting Plan - Pilgrim Pipeline

at one point only for initiation of the entire shot and brought to the surface for trunk lines. Pilgrim Pipeline Project 3 Appendix B – Blasting Plan D. Drill and Blast Pattern 1. Typically the drilling program will be based on 1 row of 2-1/2" to 3" inch diameter holes

Chapter 8 BLAST DESIGN - National Park Service

Chapter 8 BLAST DESIGN (Figure 8-2) Staggered pattern (Figure 8-3) Sing ... Blasting vibrations and air blast concerns may have a direct influence on which blasting program the opera- ... When contemplating a change in drill hole size, compare the area of …

9 Things to Know and Mitigate a Bad Surface Mine Blast ...

A good blast is always a joy to mining whilst a bad one is disturbing. Boulders, toes, fly rocks, tight digging and ground vibration and excessive airblast are the main futures of a poor blast. Bad blast can be prevented by proper drill and blast designs, proper QA/QC, good …

BLASTEC - Orica Mining Services

Calculation of Specific Drilling and Specific Charge are in the program based on Rock Volume per Blast. In turn the Rock Volume is based on Width of the Blast, which means the distance between the first and last hole in a row, or between a free surface and the last hole in the row.

Surface Mine Blasting - Office of Surface Mining

SURFACE MINE BLASTING Proceedings: Bureau of Mines Technology Transfer Seminar, Chicago, IL, April 15, 1987 Compiled by Staff, Bureau of Mines ABSTRACT The Bureau of Mines has sponsored a comprehensive research program to enhance the safe, effective, and efficient use of blasting technology by the mining industry.

Reducing Drill and Blast Cost through Blast Optimisation ...

Afum, B O and T emeng, V A (2014), " R educing drill and blast cost through blast optimisation – A case study ", 3 rd UMaT Biennial Internat ional Mining and Mineral Conference, pp 137-145 .

Surface down-the-hole drill rigs - Mining & Rock ...

Surface down-the-hole drill rigs Our Surface down-the-hole (DTH) drills offer the highest mobility, a smaller footprint and the ability to serve multiple sites. Equipped with powerful down-the-hole hammers, Down The Hole Rigs are designed for high-capacity rock drilling in quarries, opencast mines and rock excavation projects.

Donnelly Blasting

For more than a decade, Australia's Donnelly Blasting Services has been one of Queensland's most successful drilling and blasting contractors. Donnelly Blasting Services (DBS) became the first drilling and blasting contractor in Australia to acquire 's new PowerROC T35 surface crawler rig.

Rotary Drilling and Blasting in Large Surface Mines - CRC ...

Summary. In large surface mining operations, drilling and blasting activities constitute more than 15% of the total costs. In order to optimize performance and minimize costs, a thorough knowledge of drill and blast operations is, therefore, extremely important.

Drill and Blast Fundamentals Masterclass – Trade Essential

T he The Drill & Blasting Course is primarily designed to deliver a review of blasting & drilling techniques as well as their key products. It will provide the presentation on the subject of new technologies & processes meanwhile removing variability around drilling and blasting operations.

Blasting

Surface mining Development . Blasting . Explosives . Drift or Tunnel Blasting . Blast Pattern Design . Firing Sequence . Smooth Wall Blasting . Supporting . Objective . ... The JAMA DBU 800 underground drill/bolt machine. Shotcrete. Shotcrete is the generic name for cement, sand, and fine grain aggregate concentrates which are pneumatically and ...

Surface drill rigs — Mining and Rock Technology

Our surface top hammer drill rigs are exceptional at breaking both the limits and the ground below, efficiently punching holes of 22-152mm in diameter; our surface down-the-hole drill rigs provide unmatched results in high-capacity rock drilling, leaving you with holes of 89-152mm in diameter and our dimensional stone drill rigs are designed to ...

Drill and Blast Method - railsystem

Apr 21, 2012· Drilling and blasting powerpoint 2003 ... through abrasive effect of bit that rotates in hole. TYPES- 1.Blast-hole drills 2.Shot drills 3.Diamond drills Blast hole drills- Rotary drill consisting of steel pipe drill stem on bottom of which is roller bit that disintegrates the rock as it rotates over it. ... Shot drills- Rotary drill whose bit ...

The changing face of drill and blast ...

In combination with a fuel efficient 210kW engine, it is one of the most powerful and economical surface top hammer drill rig in its class. "What is special about this powerful type of drill rig is that even difficult, narrow and very uneven drilling fields can be drilled, which is not possible to the same extent with any other rig," said Klaus Berge, a transport, drilling and blasting ...

Deswik.OPDB (Open Pit Drill and Blast Design)

Fast, efficient drill and blast design for surface mining methods.

Westdrill

Welcome to westdrill. WA's leading surface drilling and blasting specialists. With a reputation built on our unwavering commitment to providing safe, efficient and reliable drilling solutions, look no further than Westdrill for your next project.

Drilling, Blasting & Explosives Solutions - RESPEC

RESPEC's drill-and-blast experts have specialized experience in all aspects of blast design and optimization for metal/nonmetal surface and underground blasting. That experience also includes specialty projects, such as equipment rescue, collapse blasting of voids and underground workings, explosive storage design, blast vibration and ...

H BLASTING IN SURFACE EXCAVATION

BLASTING IN SURFACE EXCAVATION Any blast optimisation programme calls for a clear ... The stemming material could be water, drill cutting, sand, mud or crushed rock. The best is the dry angular crushed rock ... H_BLASTING IN SURFACE EXCAVATION Author: user

AL Drilling and Blasting

ROC C65 Surface Drill Rig . The ROC C65 is a high-capacity down-the-hole crawler drill primarily designed for quarry blast hole drilling in virtually all types of rock formations for aggregate production and limestone for cement production with a hole diameter 92mm – 200 mm.

Drilling and Blasting - an overview | ScienceDirect Topics

Jan 11, 2011· Zong-Xian Zhang, in Rock Fracture and Blasting, 2016. 21.5.2 To Increase Explosive Energy in Blasting. The preceding analysis indicates that an increase in drilling and blasting energy can increase the efficiency of total energy in the whole size reduction system. Moreover, a total of 210 blast tests show that the specific surface created by blasting in the unit of cm 2 /g linearly increases ...