Corruption in Kerala Mines Safety

One of the directors of Mine Safety Directorate, South Zone, was arrested by the Central Bureau of Investigation team, while accepting bribes from mine owners.

CBI sources said the official was travelling northwards from Thiruvananthapuram, Kerala State and collecting money. The mines safety director arrived  on Sunday and was staying here when the sleuths caught him. Bribes were collected for relaxing  provisions for the safety of the labourers in mines coming under the South Zone of the directorate. Nearly Rs. 4 lakh and gold coins were recovered from him .

Unsafe Mine working and Corruption in Kerala Mining. Mines safety India

Development of an underground metal mine

An underground mine, in its early stages, requires a carefully planned network of shafts, drifts and raises  which serves the following purposes:-

1.      Enables one to know the quality of mineral and extent as well as shape, thickness and dip of orebody, nature f country rock, strength or ore and wall rocks, nature and extent of overburden, etc.

2.      Permits prospecting to be carried out from underground workings, etc.

3.      Provides access and transport facilities for men, material and excavated mineral.

4.      Permits arrangement for drainage of water and ventilation of mines.

5.      Enables mine planners to decide upon method of stoping.

The formation of such network of shafts, drifts and raises mentioned above is known as development of the mine. The site of sinking the shaft are then decided by the mine owner and the work of sinking of shafts, whether inclined or vertical, is usually entrusted to an established firm of shaft sinking contractors and rarely done departmentally by the mining company. The shaft sinking is a costly process and takes 2-3 years depending on the depth, nature of strata to pass through, and the difficulties one may encounter during sinking. The period of shaft sinking normally utilized by the Mine Executive to procure equipment for underground development, other constructions on the surface and for building up the infrastructure for the mining project.  Blasting by Raydet Vis-a-Vis Detonating Cord, Down the Hole Production Drilling Pattern, KHETRI AND KOLIHAN MINES, KHETRI COPPER COMPLEX, Long Hole Drilling 57 mm Diameter hole, MALANJKHAND COPPER PROJECT, Mine Planning and Equipment Selection, Open Cast and Under Ground Mine section Over Hand stoping - Room and Pillar, stope drilling and cable bolting, Sub Level Caving Method (block caving). 

Tamil Nadu and Kerala Mines Safety Association - Kerala Zone

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Mr. M C Katare About - Mine Planning Engineer - Malanjkhand Copper Mines

Mr. M C Katare About - Mine Planning Engineer - Malanjkhand Copper Mines. Blast Hole Open Stopes Blasting to Improve Fragmentation in Mines Coal Mining Vs. Metalliferous Mining CUT AND FILL MINING Development of an underground metal mine Inspection Mine Plan and Section Lead and Zinc Under Ground Mining Methods Mine Planning Engineer - Malanjkhand Copper Mines Raising methods in metal Mines Typical Sub Level Stopes (54mm dia holes) UNDERGROUND MINING METHODS AT KOLAR GOLD FIELDS. Blasting by Raydet Vis-a-Vis Detonating Cord Down the Hole Production Drilling Pattern KHETRI AND KOLIHAN MINES KHETRI COPPER COMPLEX Long Hole Drilling 57 mm Diameter hole MALANJKHAND COPPER PROJECT Mine Planning and Equipment Selection Open Cast and Under Ground Mine section Over Hand stoping - Room and Pillar stope drilling and cable bolting Sub Level Caving Method (block caving). Blasting Download page – Rules, Regulations, Research and Resources Blasting Principles for open pit mining Blasting Techniques in High Production underground metal Mines Controlled Blasting in Mines CORRECT BURDEN Explosives and Blasting in (Open Cast Mines) Ground Vibration and Air blast IN- HOLE DELAY SYSTEM INFORMATION REQUIRED DURING THE BLAST ROCK PROPERTIES, Mines safety India.

Mine Planning and Mine Design by N G Nair Malanjkhand

Mine Plan and Mine Design by N G nair Malanjkhand Copper Project. sub Level open stopes and VCR Methods of sotpe (Ore Extraction) practiced at Kolihan copper mine and khetri copper mine of of Hindustan Copper Limited. HINDUSTAN COPPER LIMITED

Mine Plan and Mine Design Hindustan Zinc Limited

A MINING ENGINEER WITH NEW VISION FOR THE MINING INDUSTRY

Mine Planning and Mine Design

Mine Planning
Under Ground Mining Methods Khetri. Stopping Methods practiced in Indian Metal Mining

From Mines Plan and section, Khetri and Malanjkhand

Sub level Mining Methods Mine Planning by N G Nair Manager (Mines) Malanjkhand Copper Project. I worked at Khetri Copper complex, Hindustan Zinc Limited, Bharat Gold Mines Limited. 

From Mines Plan and section, Khetri and Malanjkhand

SUB LEVEL STOPING

Some autorites (eg. Higham) condiser it to be a variation of overhand stoping adapted to massive and wide ore deposits. However, the drill holes used in the stopes may be downwarde or in a ring or fan pattern and the stoping method is better treated as a seprate variety of open stping.

The method involves the driving of subleves within the orebody to vertically divide a block to be stoped. Miners working within the sublevel opening drill a pattern of holes, long holes of re. Ore is produced b drilling and blasting longholes which may range n diameter from 50-200 mm  with length up to 90 m. The ore falls into he large open stope created by previous blasts. For deposits of thickness less than 20m, sub-level for deposits width greater than 20m, the sub-level for deposits of width greater than 20m, the stopes may be formed in transverse direction. Ie. From handwall to footwall (transverse stopes). The method requires considerable preparatory work prior to stoping.

Vertical pillars are left between stopes on the same level. These are called rib pillars. Horizntal pillars are left to support the main haulage levels. The horizontal pillar for support of the upper level is called crown pillar; the one support of the lower level is called the sill pillar.