Andrew's experience covers all aspects of the resource venture capital from project evaluation, IPO's, fundraising, investor relations, cartography, technical report writing, exploration program design, with an applied expertise in mineral exploration in porphyry copper deposits, Athabasca unconformity uranium deposits, RIRG's (reduced intrusive related gold) deposits and layered mafic intrusion Ni-Cu-PGM deposits. Caving-in definition: a collapse | Meaning, pronunciation, translations and examples In open-stope mines the greatest loss of ore is that tied up in pillars left for support of the back or hanging wall. If there is enough ore, initial capital will be recouped over the life of the deposit. Panel, or block caving, is widely considered the 'new frontier' as mining operations move towards underground methods. Trekking, caving and canoe riding. 2. In metal mining, caving implies the dropping of the overburden as part of the system of mining. A general term that refers to a mass mining system where the extraction of the ore depends largely on the action of gravity. There is no “care and maintenance” comparable to other styles of mining. Mining giant Rio Tinto is currently reviewing a possible investment in block caving at the Argyle Block caving is achieved by undercutting the ore body and inducing gravity to drop the ore into collection points.First, a “grizzly” level and haulage tunnel are put in below the undercut level. Definition of block caving A general term that refers to a mass mining system where the extraction of the ore depends largely on the action of gravity. By removing a thin horizontal layer at the mining level of the ore column, using standard mining methods, the vertical support of the ore column above is removed and the ore then caves by gravity. (2) The second system is the slusher system, which uses slusher scrapers for the main production unit. Block caving has a high production rate, which means high capital costs at the start of the project but relatively low operating costs. Caving – also known as spelunking in the United States and Canada and potholing in the United Kingdom and Ireland – is the recreational pastime of exploring wild cave systems (as distinguished from show caves).In contrast, speleology is the scientific study of caves and the cave environment. Recovery and dilution usually are interrelated; with some methods of stoping a high recovery involves contamination of the ore from the walls or capping, and often clean ore can be obtained only by leaving some ore in the mine. Block (gravity) caving is a bulk underground mining method, which allows large low-grade deposits to be mined underground. Block caving is used to mine massive steeply dipping orebodies (typically low grade) with high friability. Today most mines use a panel system, mining the panels sequentially or by establishing a large production area and gradually moving it forward as the first area caved becomes exhausted. An act of collapsing or caving in.Verb 3. Recent Examples on the Web The free event, from 10 a.m. to 5 p.m., features ice cavings, character meet and greets, an ice slide, hot chocolate, scavenger hunt and kids crafts. A drift is driven along the bottom of the ore body, and this is eventually enlarged into the shape of a trough. v. As broken ore is removed from the mining level of the ore column, the ore above continues to break and cave by gravity. Ore is then broken up so that it falls from the roof of the undercut level  through the shafts to the grizzly level where it is collected and focused to the main haulage level. It was developed in the over a period of time (1917-1930) in the Globe-Miami Most underground mining methods have prohibitively high operating costs, which only allow high grade deposits to be mined. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!Learn a new word every day. 2. In coal mining, the practice of encouraging the roof over the waste to collapse freely so that it fills the waste area, thereby avoiding the need to pack. A hollow or natural passage under or into the earth, especially one with an opening to the surface. Definition of block caving. This is why it is common at large Despite widespread use in copper mines, block caving can be used in a variety of situations where low-grade, high-tonnage deposits cannot be efficiently accessed using open pit methods. but end up mining due to ore body shape and mining method. Implementing a successful block cave requires substantial planning, infrastructure and training – and ultimately a long lead time. This sequence of mining is no longer widely used.

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