email [email protected] | +86-21-58386256
Quarry Crusher

Quarry Crusher

There are numerous quarry stone crusher manufacturers in China,among which GM is one of the leading ones

Sand Making Machine

Sand Making Machine

Sand making machine is also called vertical shaft impact crusher. Application of sand making machine is wide

Jaw Crusher

Jaw Crusher

Jaw crusher machine is the necessary machine in sand making production line

Impact Crusher

Impact Crusher

Impact crusher has many unique advantages, and attracts much attention

How to Carry out Controlled Blasting of Rocks? [PDF]

Blasting without delay or sufficient delay numbers increases ground vibrations due to an increase in maximum charge per delay. The vibration can be significantly reduced by optimizing blast design parameters. It is suggested to establish optimum burden, hole spacing, powder factor, and hookup to control vibration. FAQs on Controlled Blasting

Get Price

Introduction to Explosives - Public Intelligence

Introduction to Explosives. FOR OFFICIAL USE ONLY All dynamite is considered a secondary high explosive and can be initiated with a blasting cap – All are suitable as main charges in an IED Terrorists operating domestically will likely try to steal dynamite or improvise its manufacture – Mining sites and quarries may be targeted for theft

Get Price

Abrasive Blasting Operations, Engineering Control and Work ...

ABRASIVE BLASTING OPERATIONS Engineering Control and Work Practices Manual Enviro-Management & Research, Inc. Washington, D.C. 20001 FINAL REPORT Contract No. 210-75-0029 U.S " DEPARTMENT OF HEALTH, EDUCATION, AND WELFARE Public Health Service Center for Discese Control National Institute for Occupational Safety and Health Division of Physical Sciences and …

Get Price

Hard Rock Miner's Handbook - Stantec

Hard Rock Miner's Handbook is a work of the heart. Jack—whose 40+ year career spanned engineering, construction, and operation of mining projects worldwide—conceived of and wrote the first edition of the Handbook, published in June 2000, to assist miners and engineers in the difficult world of hard rock mining. It was his gift to an industry that provided him with employment, challenges ...

Get Price

How to Carry out Controlled Blasting of Rocks? [PDF]

Blasting without delay or sufficient delay numbers increases ground vibrations due to an increase in maximum charge per delay. The vibration can be significantly reduced by optimizing blast design parameters. It is suggested to establish optimum burden, hole spacing, powder factor, and hookup to control vibration. FAQs on Controlled Blasting

Get Price

Chapter 8 BLAST DESIGN

BLAST DESIGN (Figure 8-2) Staggered pattern (Figure 8-3) Sing (Figure 8-1) Square or rectangular pattern. 114 DELAY PATTERNS Delay patterns, and varying the hole array to fit natural excavation topography, allow for more efficient use of the explosive energy in the blast. Benches may be designed and carried forth with more than one face so that simple blasting patterns can be used to remove ...

Get Price

3.09 SURFACE COAL MINING BLASTER CERTIFICATION

3.09 SURFACE COAL MINING BLASTER CERTIFICATION Question: As part of coal mining, do I plan to be responsible for the use of explosives in the project? Why do I need this approval? Blasting on surface coal mining operations is required to be conducted under the direction of a person who has been certified as a blaster by the Department. The blaster is the person who is directly responsible for ...

Get Price

CONTROLLED BLASTING AT QUARRIES - OSSGA

This technique is also used in mining, road construction, utility installations, and even residential basement excavations. Once broken apart by the explosive forces, the fragmented rock can be easily handled, transported and processed to produce the range of aggregate materials required by the construction industry. Blasts are controlled and regulated Blasting is no longer the common ...

Get Price

An Introduction To Surface Mining

Known also as "open-cast mining", open-pit mining is the most common type of surface mining. Open-pit mines are enormous holes in the ground; created and increased by blasting and drilling rocks apart. The mine develops into a conical shape with benches (or steps) in a cross-section, which spiral from the top to the bottom of the mine, so that trucks can drive down the sides and collect ...

Get Price

Blaster's Training Modules - Module 1 - Explosives

blasting instructor. DISCLAIMER The technologies described in the module are for information purposes only. The mention herein, of the technologies, companies, or any brand names, does not constitute endorsement by the U.S. Department of the Interior's Office of Surface Mining. Explosives This module presents information pertaining to the classification and properties of explosive products ...

Get Price

Blasting principles for open pit mining. Vol. 1 & 2 ...

Main Blasting principles for open pit mining. Vol. 1 & 2. Blasting principles for open pit mining. Vol. 1 & 2 Hustrulid W. A.A. Balkema, 1999. - 1013 p.Divided into two volumes, this accessible work describes the principles involved in hard rock blasting as applied to open pit mines. A large number of examples illustrate the application of the principles. The first volume introduces basic ...

Get Price

blasting - Translation in LEO's English ⇔ German …

mining blasting: Last post 06 Feb 09, 15:52: what is this in German Minen sprengen.. is this it? thanx: 4 Replies : sweep blasting: Last post 21 Dec 08, 17:03: sweep blasting QuellentIn the case of hot dip galvanised material, perform a light sweep… 5 Replies: anchor tooth blasting: Last post 03 Jan 08, 19:46: Holding time: Time between completion of final anchor tooth blasting, or final ...

Get Price

FAQs on Air Quality Modeling Data and Techniques

FAQs – AQ Modeling Data/Techniques 2 v.13Jul These expected conditions are considered for each source type to determine The locations at which source impacts would occur under the various transport and dispersion conditions expected at the source location, including whether downwash could be a factor;

Get Price

New trends in drilling and blasting technology ...

(2000). New trends in drilling and blasting technology. International Journal of Surface Mining, Reclamation and Environment: Vol. 14, No. 4, pp. 305-315.

Get Price

Rock blasting for mining - LinkedIn SlideShare

4 In mining operations, blasting has become a routine work. With proper understanding of the rocks and blasting methods, the mining work can be done effectively. 5. 5 The basic objectives of this report is to highlight the principles and practices adopted in rock blasting operations for mining sectors. 6.

Get Price

blasting principle in open pit mining rar hustrulid …

blasting principles for open pit mining pdf download. Blasting principles for open pit mining Vol William Hustrulid.pdf - Ebook download as PDF File (.pdf), Text File (.txt) or read book online. Scribd is the world's largest social reading and publishing site. A Gas Pressure-Based Drift Round Blast Design Methodology . A gas pressure-based drift round blast design methodology William Hustrulid ...

Get Price

BEST PRACTICES IN DRILL AND BLAST - IQPC Corporate

Ahead of Drill and Blast 2014, Mining IQ has assembled insights into trends, frameworks and observations that refl ect industry progress towards effi cient and productive drill and blast operations. TECHNOLOGY Developments in information technology have gone through leaps and bounds, which have led to ripple effects in raising the standards of technology in drilling and blasting. In drilling ...

Get Price

Blast optimization at Kriel Colliery J r n a

surface and underground mining methods. The underground operation was started in 1975 and is currently divided into six mechanized sections. The opencast was commissioned in 1978 and consists of two dragline pits and a mini-pit. Project background General information on blasting operations This study was conducted in both Pit 5 and Pit 6. The overburden in Pit 5 is drilled on a 10 m x10 m ...

Get Price

drilling and blasting for iron ore

drilling and blasting for iron ore - BINQ Mining. Rank Level: 4.7/5 · 1,067 . drilling and blasting in open cast iron ore mines. This page is provide professional drilling and blasting in open cast iron ore mines information for you, we have ...

Get Price

Blasting Injuries in Surface Mining with Emphasis on ...

Blasting injuries in surface mining with emphasis on flyrock and blast area security Abstract Problem: Blasting is a hazardous component of surface mining. Serious injuries and fatalities result from improper judgement or practice during rock blasting. This paper describes several fatal injury case studies, analyzes causative factors, and emphasizes preventive measures. Method: This study ...

Get Price

Blasting - Safety Training PDF Files

Blasting pdf files you can use in your safety training programs. Repository Home. Online Testing. Rescue Contests. Archived Exams. Games/Templates. Links Library. USMRA Donations. united states mine rescue association. Mine Safety Training Adobe PDF Document Collection. Category: Blasting. View all files in this category: 94 Kb: Glossary of Blasting Terms 13-page reference document on blasting ...

Get Price

BLASTING TECHNICAL INFORMATION - MC Finishing

CABINET SUCTION BLASTING CABINET PRESSURE BLASTING BLASTING TECHNICAL INFORMATION. CABINET BLAST PRODUCTION RATES Below is an estimate of abrasive delivery rates per hour and sq. ft. of blast area in sq. ft. per minute with various orifice I.D.ʼs and 80 p.s.i. I.D. CFM PSI Blast Area Sq.Ft./Minute Abrasive Unit Hr. 3/32" 7 80 1/2 80 lbs 1/8" 15 80 1 to 1-1/2 120 …

Get Price

Frequently Asked Questions | NOMIS …

Frequently Asked Questions. Are your seismographs used to measure earthquakes? No. Our units are designed to measure vibration and air pressure created during activities such as blasting, pile driving, construction and mining. Do I have to have the unit calibrated? Annual calibration is recommended in order for your seismograph to perform at peak efficiency. You should also check the ...

Get Price

Return to Work Safely Templates and Checklists - …

COVID-19 Templates and Checklists. These checklists and templates have been prepared to help employers, business owners and managers to get their business up and running again and to inform workers about what they need to do to help prevent the spread of Covid-19 in the workplace.

Get Price