GIANT MINER

picture @Edo LGA in a Dolomite Quarry Dewatering operation is one of the most sensitive and continuous operation during raining season. The approach to this operation depends on the mine design, mining method and other factors including the mine terrain. Most surface mine can not escape the challenge of surface water inflow but can be overcome through proper dewatering plan. Dewatering is define as the process of removing unwanted collection of water in the mine. It describe as the approach use in remove water from mine pit so as to gain access to the ore deposit. In view of surface Mining methods, which involves the extraction of deposit with less overburden thickness. The mining approach adopt in surface Mining methods are such that a cavity is advance into the Earth crust. Such cavity has lower attitude compare to the nearby environment which prompt the collection of water into it. Mine out area (stope, pit) recieve water from: 1. Surface run-off water 2. Direct precipit...

Stemming in blasting is very important and affect not only the efficiency of the blasting but also the impact of the blasting on the environment. By simple definition, stemming is a confinement process done by the use of innert materials to confine explosive charge within the drill hole during charging. The define function of stemming is to: 1. Ensure the explosive charge is confine within the hole socket so as to avoid poor distribution of explosive release shock energy. 2. Prevent the escape of shock wave into the environment and causing airblast and other environmental impact. Stemming can be top confine or inter-column charge confined. In case of decking charge pattern, each explosive charge column is separated by innert material to reduce the charge weight and also to ensure effective distribution of shock energy along the hole column. In the case of decking, stemming is use to confine and to separate upper charge column from the lower charge column. Stemming materials...

Truly energy can neither be created not be destroyed but can change from one form to another. Explosive are chemical compound which at detonation releases specific joules of energy. The energy release during Blasting travels in form of shock  wave, heat energy, light energy, sound energy and gas energy. The first release is light energy followed by shock wave which is associated with heat energy. The last release energy is the gas energy which finalize the work need to be done by Explosive charge. Energy is defined by various scholars as the ability needs to do work. The work before Explosive during detonation is to explode rock mass, fragment rock mass, throw rock piles and to  cause other negative effects like ground vibration, airblast, and rock projection (flyrock) Sequence of Explosive energy ULTILIZATION during Blasting  The light energy travels faster than all others energy, it shows the initiation direction of Explosive charge detonation.  Check t...

Pre Blasting and post Blasting inspection for data collection and blast design is very important so as to performance a profitable and productive Blasting. Some of the pre-blasting inspection carried out before Blasting includes; 1. Ground water condition (in-hole water check) 2. Rock face discontinuity mapping 3. Drilling parameters collection. 4. Free face checking. 1. Ground water condition (in hole water) Water may be present in the mine either through surface inflow or underground water outflow. Ground water condition affects Blasting materials, expecially when using a non water resistant Explosive like ANFO. This may result into MISFIRE and poor fragmentation. All holes must be inspected and those with water should be noted. Water tend to reduce the sensitivity of non water resistant Explosive. Explosive like Dynogel and emulsion gel and other water resistant Explosive should be use in noted water filled holes. Hole with water can also be drained or flush by high pres...

The main aim of mining is to secure profit. This in most cases may be affected by mine operation cost if not properly managed. Drilling and Blasting plays high role in ensuring profit in Mineral exploitation. If the expenses incur on drilling and Blasting yield poor result, it tends to affect all the downstream operation cost. It therefore good that blast design be done and monitored thoroughly by the Mine supervisor. This is liken to safety in the mine, workers life is very important and must be given principal consideration. Blasting must be done safely with no accident record or any form of misfire. Explosive is dangerous when poorly handle but peaceful if well handled. In 1960s before Alfred Nobel light up Explosive works, the use of Nitroglycerin Explosive base, TNT and puliminating Mercury & gold had cause great havoc due to there high sensitivity. But for the discovery of Ammonium Nitrate base Explosive which are less sensitive but high exotically sensitive. Explosive is now...

Blasting Design, safety and Explosive handling and Storage: Many scholar contribution worldwide [07/06, 8:33 p.m.] Hanif Ullah khan: The purpose of a good open pit blast design (production blast) is to achieve the following at acceptable costs...: -fragmentation, muckpile profile for safe and efficient loading and hauling and other downstream processee -wall stability -minimum environmental impacts (undesirable effects of a blast): ground vibrations, noise, airblast, _flyrock_, dust and fumes. [07/06, 8:33 p.m.] Hanif Ullah khan: I will be throwing in some of the rules of thumb for open pit blast design. A rule of thumb is basically a principle with broad application that is not intended to be strictly accurate but can be quite handy in coming up with sound and economic designs [07/06, 8:33 p.m.] Hanif Ullah khan: -Mining equipment: equipment also has a say in the blast deasign process. Drilling equipment dictates blasthole diameter and depth limits. Loading ...

Blasting is the technology use in breaking rock mass or boulders into specified require sizes by the use of Explosive. The main objective of Blasting is to reduce rock/Mineral size so as to minimize cost of comminution and other downstream processes. Poor fragmentation affect other Mining operations like; loading, Haulage, crushing, and separation process. It also increase production cost and operation cost. Most Quarry and mine practice secondary Blasting or implement hydraulic breaker to further reduce Blasting output. It therefore good to subscribe to better blast design to ensure good blast output result so as to avoid further reduction expenses. What is micro fracture? Fractures are crack or breakage in rock mass. Micro fractures are the cracks create in rock mass by Explosion shock waves during Explosive charge detonation. What is the important of micro fracture in rock fragmentation? The micro fracture creates slabbing in rock mass and t...