EXPLOSIVES HANDBOOK FOR ACCIDENT PREVENTION
2020-7-16 Accident Classification: Explosives and Breaking Agents Type of Mine: Limestone -Surface · Location: Pennsylvania . Age of Victim: 32 . Total Mining Experience: 7 years . Job Classification: Equipment Operator . Number Employed at Mine: 13 . An equipment operator was sitting in a pickup truck guarding a road leading to a blasting site. Soon after
(PDF) Determining Acceptable Explosive Charge Mass
A basic method of mining is the detonation of explosive charges placed in long holes with diameters of 95 mm and 105 mm. Until the target height of 3 rd -floor level exploitation has been
EVALUATION OF A SHEATHED PERMISSIBLE EXPLOSIVE
2012-8-30 an explosive charge of l-l/Z lb, equiva- lent to two l-1/4- by 16-inch cartridges of permissible water gel explosive, a l/2-inch layer of salt proved to be adequate. One question to be answered was the proper shape for the explosive charge. Charges of various shapes with
(PDF) Firing Explosive Charges with Millisecond Delay in
Applying explosives to mine deposits also influences effectiveness of blasting works, associated with fragmentation of rocks. Since the beginning of the 1950s, explosive charges are most often
Effect of Type of Explosive and Blast Hole Diameter on
This paper reports the effect of type of the explosive and blast hole diameter on the boulder count in limestone quarry blasting. In all, 264 blasts using ANFO or SME explosives have been
BULK EMULSION EXPLOSIVE A CASE STUDY
2009-9-17 By using Bulk Emulsion Explosive it was possible to achieve a better breakage performance. In a copper mine this resulted in a decreased powder factor and thereby less cost for the explosive. In a limestone quarry an expansion of the drilling pattern lowered the drilling cost and the change-over to Bulk Explosive made handling and storage more adventageous. The studies are made for a surface copper mine using large diameter (251-310 mm) drill holes and a limestone quarry using small diameter drill holes (95 mm). *) Marketing Manager, Nitro Nobel AB, Sweden **) Manager Bulk Explosives,
Firing Explosive Charges with Millisecond Delay in
2018-12-7 jacent blastholes of a given series. Only one explosive charge per delay number was detonated. It was also planned to detonate 5 single explosive charges and multiple row 2 millisecond firing delay. During multiple row firing, maximum 4 charges per de-Fig. 1. Seismic effect of firing single explosive charge (based upon RI 6151) Fig. 3.
Controlled blasting in a limestone mine using electronic
2017-1-25 Except for very deep-seated deposits, open cast mining method has been recognized as the safest and most productive mode for mining minerals. Ever growing demand in minerals and coal has compelled the mine operators to increase the size of mine, which has resulted in an increasing trend towards large capacity open cast projects. Explosives and blasting techniques play a significant role in
Blaster's Training Modules Module 1 Explosives
2008-5-22 explosives manufacturers, and the military have developed many ignition, burn-rate, and detonation tests. Some commercial explosives with high fuel content may readily ignite and burn. In confined spaces, burning may lead to detonation. ANFO and water-based explosives such as water gels and emulsions are more difficult to ignite in the open.
Surface Bulk Explosives AECI Mining Explosives
2020-8-5 EXPLOSIVES AEL's S100 Eco Series base emulsion is typically used in standard surface mining applications with the added benefit of being environmentally friendly. The recycled oil component within the emulsion formulation is fully consumed during the detonation phase and allows for an efficient way of consuming used oils while contributing to
Explosive used in lime stone mines
Explosive used in lime stone mines Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Explosive used in lime stone mines, quarry, aggregate, and different kinds of minerals.
Exploxives Used In Limestone Mining
exploxives used in limestone mining exploxives used in limestone mining Machinery For Used For Limestone Mining huro-bus, Small explosive charges set along drilled lines free blocks of stone to beget price. Explosives Used By Stone Quarries In Nigeria.
BULK EMULSION EXPLOSIVE A CASE STUDY
2009-9-17 By using Bulk Emulsion Explosive it was possible to achieve a better breakage performance. In a copper mine this resulted in a decreased powder factor and thereby less cost for the explosive. In a limestone quarry an expansion of the drilling pattern lowered the drilling cost and the change-over to Bulk Explosive made handling and storage
CONDUCTING THE CONTROLLED MASS BLASTING ON
2013-11-26 THE LIMESTONE MINE BREZA, BREZA, WITH USE THE ANFO EXPLOSIVES "RUDEX 1" Abstract ANFO explosives in most cases account for 90% of the total weight of explosives during the ex-ecution of mass mining in the mining facilities on the territory of Bosnia and Herzegovina. A large
Designing Blast Patterns Using Empirical Formulas
2014-4-2 Used in Quarrying Limestone and Dolomite, With Geologic Considerations By Joseph M. Pugliese Twin Cities Mining Research Center, Minneapolis, Minn . . US Department of Interior Office of Surface Mining Reclamation and Enforcement Kenneth K. Eltschlager Mining/Explosives Engineer 3 Parkway Center Pittsburgh, PA 15220 Phone 412.937.2169
Explosive charge mass and peak particle velocity (PPV
2010-6-9 1 Introduction. In mining engineering, interest is given to the determination of peak particle velocity (PPV) from the amount of explosive-charge (mass) used in blasting (Bollinger 1971, Siskind et al 1980, 1989, Anderson et al 1982, Dowding 1985, Anderson 1993, Persson et al 1994, Muller 1997, Muller and Hohlfeld 1997, Hoshino et al 2000, Siskind 2000, Chen and Huang 2001, Tripathy and Gupta
DETERMINATION OF BENCH BLAST DESIGN
2020-4-29 stemming material type and size, decks type and decking length, type of explosive, column and bottom charge, powder Factor for limestone quarry at Al Ain El Sukhna west of Gulf of Suez according to field trial tests. 1. Introduction In surface mining drilling and blasting are the major unit operations and have a big effect on
(PDF) Influence of rock and explosives properties and
Blasting is a primary means of extracting minerals and ores at surface mining operations. The domestic consumption of explosives and blasting agents during the year 2002 was about 5.53 billion pounds.
Decoupled explosive charge effects on blasting
2020-10-28 same size as the explosive charge. The explosive used was a 0.75 lb. slurry charge, 1.5 in. diameter and 10 in. long. The diameter and depth of the borehole were 2 in. and 3 ft., respectively. The borehole pressure, P^, for cylindrical charges was found to vary with the explosion pressure, P^, and the ratio of the radius of the charge Rc, to
Surface Bulk Explosives AECI Mining Explosives
2020-8-5 EXPLOSIVES AEL's S100 Eco Series base emulsion is typically used in standard surface mining applications with the added benefit of being environmentally friendly. The recycled oil component within the emulsion formulation is fully consumed during the detonation phase and allows for an efficient way of consuming used oils while contributing to
Arch. Min. Sci., Vol. 60 (2015), No 3, p. 825–845
This article presents a procedure for determining the safety of explosive charges for their surroun-ding environment, using a limestone mine as a case study. Varied geological structures, as well as other constructions in the surrounding area of a mine, sometimes
Seismic characteristics of cavity decoupled explosions in
limestone: An analysis of Soviet high explosive test data J. R. Murphy, • I. O. Kitov, • N. Rimer, 3 V. V. Adushkin, • and B. W. Barker • Abstract. During the summer of 1960, Soviet scientists conducted a series of high-explosive, cavity d½coupling tests in a mine in Kirghizia. These d½couplcd tests were carried out in
BULK EMULSION EXPLOSIVE A CASE STUDY
2009-9-17 By using Bulk Emulsion Explosive it was possible to achieve a better breakage performance. In a copper mine this resulted in a decreased powder factor and thereby less cost for the explosive. In a limestone quarry an expansion of the drilling pattern lowered the drilling cost and the change-over to Bulk Explosive made handling and storage
Explosive charge mass and peak particle velocity (PPV
2010-6-9 1 Introduction. In mining engineering, interest is given to the determination of peak particle velocity (PPV) from the amount of explosive-charge (mass) used in blasting (Bollinger 1971, Siskind et al 1980, 1989, Anderson et al 1982, Dowding 1985, Anderson 1993, Persson et al 1994, Muller 1997, Muller and Hohlfeld 1997, Hoshino et al 2000, Siskind 2000, Chen and Huang 2001, Tripathy and Gupta
Decoupled explosive charge effects on blasting
2020-10-28 same size as the explosive charge. The explosive used was a 0.75 lb. slurry charge, 1.5 in. diameter and 10 in. long. The diameter and depth of the borehole were 2 in. and 3 ft., respectively. The borehole pressure, P^, for cylindrical charges was found to vary with the explosion pressure, P^, and the ratio of the radius of the charge Rc, to
Underground Limestone Mining
2011-5-5 Underground Limestone Mining by Robert M. McKay and Michael J. Bounk The production of limestone aggregate from underground workings requires machinery to illuminate the rock face and to hoist miners into position to clean drill holes and load explosives for blasting the rock. River Products Company, Columbus Junction Mine.
Explosives Mining Types
2011-7-7 Explosives ANFO (Ammonium Nitrate Fuel Oil) One product of limestone mining is lime. A wide range of industries use lime for a myriad of uses. It is used in many of the products and
Blasting injuries in surface mining with emphasis on
2004-1-1 Unlike previous blasts, explosive charges were not decked during this blast. The investigation report (Shea & Clark, 1998) indicated that this blast was not designed according to the specifications approved in the permit document. Instead of decking explosive charges in two columns and priming separately, the entire charge was loaded in one column.
(PDF) Investigation of Some Blast Design and Evaluation
The authors of the explosive column acts on the burden rock mass conducted full scale blasts at stiffness ratio of almost that behaves like a beam embedded in the bottom of 4 on 9-10 m high limestone benches with favorable the blast hole and in the stemming area (Ash, 1963; results in terms of fragmentation, muck pile spread Ash and Smith, 1976
Master's Theses Scholars' Mine, Missouri University of
2020-10-28 ocity, and will detonate many explosives a. r. low sensitivity. er cury fulminate was eventually eliminated by the use of lead azide in the ignition charge. The ignition mixture so obtained ignites easier and reduces the opporttmity for misfires. Blasting caps, as used with safety fuse, are still applied in. any. mining operations.
