Dykon Blasting Corp. A World-Class Drilling and Blasting …

Dykon Blasting Corp works closely with contractors to ensure the safe completion of the projects in which they participate. Since each blasting project is unique, Dykon's highly-trained personnel carefully consider and design the safety procedures, equipment, technology and numerous other details required for the successful completion of the …

Explosives for Quarrying

Our customers have relied on Nelson Brothers in the supply of commercial explosives products since 1956. We have supplied over 17 billion pounds of our flagship …

Blasting Mechanics Revisited: The mechanics of rock breakage

About this four-part series. In 1963, Pit & Quarry published a series of articles on the mechanics of blasting authored by Richard Ash, a longtime professor of mining engineering at the School of Mines & Metallurgy at the University of Missouri-Rolla. The content within each article was ahead of its time, putting forth cutting-edge concepts …

How to Conduct Blasting Operations Safely? [PDF]

The blasting shall not be done within 200m of an existing structure unless permitted explicitly by the engineer in writing. All procedures and safety precautions for the use of explosives, drilling, and loading of explosives before and after shot firing and disposal of explosives shall be carried out corresponding to the region and country code.

Blasting mechanics revisited: Blasting design standards

About this four-part series. In 1963, Pit & Quarry published a series of articles on the mechanics of blasting authored by Richard Ash, a longtime professor of mining engineering at the School of Mines & Metallurgy at the University of Missouri-Rolla. The content within each article was ahead of its time, putting forth cutting-edge concepts …

Quarry drill and blast: a vital first operation

The vital process often starts with a detailed survey of the quarry face, which will enable the explosives engineer to design the blast and to plot where the shot …

Blasting vibration limits for quarries and civil construction projects

The selection of appropriate blasting vibration limits for civil construction projects and quarry operations has a major influence on a project?s overall cost, duration, and environmental impact. In some cases, the application of an overly conservative limit may affect a project?s financial viability to a point where it may not even commence, …

Quarry blasts assessment and their environmental impacts …

The use of explosives to execute blasting activities always leads to concern its effect on the environment. These effects are normally nuisances to the neighboring residence, as they come in the form of dusts, toxic gases, noises, fly rocks, air blasts and ground vibrations. ... The parameters of the recorded events due to quarry blasting and ...

Toeing the line: Blasting practices to control quarry floors, …

An application for three quarry pits has been proposed at Flinders Island, Tasmania. ... Often, operators believe that the explosives used in blasting are carefully made to ensure proper consistency and mixture. Unfortunately, this is not always the case, as commercial explosives are made in large quantities and are not major profit …

HSE

Use of explosives is a high hazard occupation. Over many years systems of work have been devised to ensure that all operations may be safely undertaken. How the shot firing is undertaken is set out in the blasting specification and the shot firing rules.

Blasting | Office of Surface Mining Reclamation and …

The meaning of the signals and the specific blasting times are provided in a blasting schedule notice that is mailed to residents within ½-mile of any blasting. Additionally, homeowners can ask questions about the blasting during the pre-blasting survey of their home (available to residents within ½ mile of coal mining permit boundaries).

Blast Training Course Guide

Quarry Services. Safe & Efficient Blasting. Duration 1 Day Who Will Benefit The Blast Management & Design course is designed to ... explosives/blasting industry of over 100 years of practical blasting experience in most blasting environments. If required, the course can be run for a small

Miami-Dade rock miners continue to blast away thanks to …

"Every single blast from the closest quarry during March 2020 has been accounted for and determined to be within normal allowable limits." In Florida, the fire marshal has the exclusive authority to decide on standards, limits and regulations on the use of explosives involved with rock blasting. Each state has its own set of standards ...

Frequently Asked Questions | The World of Explosives

In blasting, the unit of measurement we use to describe this motion is peak particle velocity. The Richter Scale reports the power of an earthquake or its magnitude. It's an estimation of the energy released at the source. In blasting, it would equate roughly to the total weight of explosives used in a blast.

Ludwig Explosives

LUDWIG EXPLOSIVES, INC. originated in the 1940's. The company's founder Archie Ludwig, was a distributor of explosives and magazine keeper. In 1950, Archie's son, Marvin Ludwig, was employed with the company. Blasting in quarries was initiated. In 1962, LUDWIG EXPLOSIVES, INC. was incorporated. With four employees, Marvin …

Evaluation of blast efficiency in aggregate quarries: facts and

Commonly available explosives for blasting produce three toxic gasses (Roberts et al. 1992; Hopler 1998), ... The most critical blast design parameter in quarry blasting is the powder factor because its value considerably affects the efficiency of the blasting. As the powder factor increases, the sizes of the resulting fragments are reduced.

GUIDANCE ON THE SAFE USE OF EXPLOSIVES IN …

supervised. This is the case whether shotfiring operations are undertaken by a quarry worker or by a specialist-blasting contractor. 1. Explosives Supervisors One person, called in this guidance the explosives supervisor, needs to be placed in overall, day-to-day, charge of work with explosives at a quarry. Exactly who is

Explosives Drilling & Blasting Services

We offer a full range of explosive products from bulk and packaged, to blasting systems and accessories. We are here to help your organization succeed in all your blasting needs.

Blasting & Drilling Company

Blasting and drilling company serving PA, MD, and DE. Contact Trinity Drilling & Blasting for construction site development & more! ... Construction, Trench & Bulk Blasting. Quarry Drilling & Blasting. Pressure Grouting. Soil Sampling. Mechanical Rock Removal. ... 2,361,318 LBS of explosives detonated . Reliable Commercial Excavation Services ...

Toeing the line: Blasting practices to control quarry floors, …

Anthony and Calvin Konya explain how the quality of explosives and other factors can contribute to inconsistent, unsatisfactory blast outcomes – while outlining …

P&Q University Lesson 4: Drilling & Blasting

Effect of Type of Explosive and Blast Hole Diameter on

Both these explosives cause substantial changes in the breakage mechanism of rockmass thereby affecting the fragmentation. 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 conducted in …

Blasting Services

With over 100 years of experience, EPC-UK is your essential 'one stop' for drilling and blasting services. EPC-UK offer the most comprehensive 'rock on the ground' service to the mining, cement and aggregate industries.

Chapter 2 EXPLOSIVES

a free face; a crack or weather seam is as good as a quarry face in this regard. 3. Gas Pressure and Rock Movement Upon detonation, along with the shock wave, the solid explosive is instantly converted to superheated ... Some explosives, and particularly blasting agents, are more sensitive to diameter changes than others. In charges with …

Utilizing bulk emulsions in quarry blasting

Ammonium nitrate comes in a solid form as a porous prill that's about 1/8 in. Explosive grade prill is porous, so it can soak up the fuel oil in the correct ratio to become the blasting agent we use. ... But ANFO generally provides a better blasting result in quarry applications. This is where blends come in to play.

What is the Role of Blasting in Mining and Quarrying?

Blasting is a fundamental technique in rock quarrying, facilitating the extraction of rock materials. This process involves the controlled detonation of …

Blasting mechanics: Material properties and powder factor

The Academy of Blasting & Explosive Technology, including Anthony Konya and Dr. Calvin J. Konya, pay tribute to the time-honored principles Ash put forth more than 50 years ago with a special 2019 series for Pit & Quarry readers. In their "Blasting Mechanics: Revisited" series, the Konyas look back on Ash's work and …

Quarry drill and blast: a vital first operation

Drilling and blasting is one of the first operations to be carried out in a quarry to gain the material for further processing. The vital process often starts with a detailed survey of the quarry face, which will enable the explosives engineer to design the blast and to plot where the shot holes should be drilled, enabling the task to be carried …

RAM Inc. to hold blasting, explosives training course | Pit & Quarry

RAM Inc. unveiled plans to host its 2022 Blasting & Explosives Safety Training (BEST) course, developed specifically for explosives engineers, drillers, field crews, safety personnel, drilling and blasting engineers and others working with explosives. This year's sessions will be conducted Sept. 20-22 at the South Dakota …