topic life of mine strip ratio mining operation

Determining Stripping Ratio

 · Stripping ratio simply refers to the amount of waste handled in order to recover certain amount of ore. The blog is made available to you by professional mining engineers for educational purpose only and to share basic knowledge in mining. It does not necessarily ...

Tropicana JV to boost production, extend mine life with …

 · "The Long Island mining strategy, which is now approved as part of the joint venture 2018 business plan, has delivered an ore reserve of 4.08Moz and extended the life-of-mine …

Mining and Quarrying

Mining and quarrying. Mining is the process of extracting buried material below the earth surface. Quarrying refers to extracting materials directly from the surface. In mining and quarrying, water is used and gets polluted in a range of activities, including mineral processing, dust suppression, and …

Surface mining

 · SURFACE MINING • Surface mining is done by removing (stripping) surface vegetation, dirt, and, if necessary, layers of bedrock in order to reach buried ore deposits (or) surface mining is the process of extraction of minerals by removal of overburden . • Overburden is the rock or waste material which is lying on the mineral to be owned .

Stripping Ratio | Mineral Production Activities | Extractives …

Stripping ratio is defined as the tonnage of waste rock to be mined, divided by the tonnage of ore to be mined from the pit. Stripping ratio is influenced by the shape of the orebody and may vary considerably during the life of the mine. Except in rare cases, it

2012 Americas School of Mines

Notes: Strip Ratio Mining Methods 27 Mistakes are often made when computing the strip ratio. It''s all in the words and you have to watch the flow of material and how it is classified. For example, according to Freeport McMoran''s 2007 10K filing, the concentrator

Stripping Ratios: What are They and Why are They …

 · A strip ratio, or stripping ratio, is an important measurement related to the open-pit mining process. It represents the amount of waste material, also known as overburden, that must be moved in ...

The Coal Mine

 · The Coal Mine. The Ncondezi coal mine will be an open pit, low strip ratio, contractor mining operation producing 1.5 million tonnes of coal over a 25 year life of mine to supply to the adjacent power plant via a 2km conveyor. Following approval of the Mine Definitive Feasibilty Study and the Environmental and Social Impact Assessment, Ncondezi ...

494 questions with answers in MINING | Science topic

 · 6 answers. Mar 16, 2021. Artisanal or Small-Scale Mining (ASM) provides an essential livelihood for over 150 million people worldwide with its operations characterized by low-tech, labour ...


UNIT OPERATIONS OF MINING. During the development and exploitation stages of mining when natural materials are extracted from the earth, remarkably similar unit operations are normally employed. The unit operations of mining are the basic steps used to produce mineral from the deposit, and the auxiliary operations that are used to support them.

Newcore shares surge on updated Enchi PEA

 · The life-of-mine strip ratio is 2.1:1, with a mined grade of 0.57 gram per tonne gold and recovery stated at 79%. Cash costs are expected to average $1,043 per oz. gold, with all-in sustaining ...

Trilogy Metals Inc. | Arctic

Life-of-mine strip ratio of 6.9 to 1. Average annual payable production projected to be more than 155 million pounds of copper, 192 million pounds of zinc, 32 million pounds of lead, 32,000 ounces of gold and 3.4 million ounces of silver for life of mine.

Balama Project

Balama Graphite Operation Summary Location Cabo Delgado Province, Mozambique Life of Mine ~50 years Mining Simple open pit mining, low strip ratio Processing Conventional – includes crushing, grinding, flotation, filtration, drying, screening and bagging Plant

First Mining Files Technical Report for the Positive Updated Preliminary Economic Assessment for …

silver; 3.9 million ounces gold and 22 million ounces silver recovered over the Life of Mine ("LOM") • Low LOM strip ratio of 2.1 to 1 with a LOM mill grade of 1.0 g/t gold and 5.3 g/t silver • LOM overall metal recoveries of 88% for gold and 93% for silver (1)

Anaconda Mining Reports Q1 2021 Production Results and …

 · Mine operations moved 59,157 tonnes of ore during the first quarter from Argyle, lower than the previous year but ahead of plan for 2021, at a strip ratio of 9.3 waste tonnes to ore tonnes. However, the mined grade was 35% lower than the mine plan, due to mining challenges in shallowly dipping areas of the Argyle Deposit.

Juniors are the answer to gold industry challenges

 · With high-grading, instead of mining a deposit as it should be, economically, by extracting, blending both low-grade and high-grade ore at a given strip ratio of waste rock to ore – the company ...

Strip Mining

Strip mining is employed in coal reserves where the overburden is removed in rectangular blocks in plan view called pits or strips. The pits are parallel and adjacent to each other. Strip mining is fundamentally different from contour or area mining on how the overburden is displaced, called spoil handling.

Butcherbird Manganese Project, Pilbara, Western Australia

It will be a simple low-cost mining operation utilising the tabular geometry of the mineralisation at the Yanneri Ridge deposit. The ore extraction will be carried out with loaders in 1-2m benches, and a mobile-crusher with a grizzly feeder. The overall strip ratio is

Corunna Downs Iron Project, Pilbara

Mining and processing at Atlas Iron''s mine Corunna Downs will be a conventional open-pit operation using drill and blast, and truck and excavator load and haul methods. It will include four open-pits, the mining of which will be outsourced to a mining contractor who …


Open Pit Strip Ratio 8.42 to 1 (2017A) Gold Recovery 94% (2017A) Mining Type Open Pit –Contractor Mining Production AISC (mine-level) 2015A –$576/oz 2016A –$534/oz 2017A - $647oz 2018E - $860-900/oz Royalty 3% - 5% sliding scale Corporate Tax

Extraction of Resources | Geology

Mining is the extraction of valuable minerals or other geological materials from the earth from an orebody, lode, vein, seam, or reef, which forms the mineralized package of economic interest to the miner. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, dimension stone, rock salt, potash, gravel, and clay.

Overview and Mineral Resource Estimate

The strip ratio is expected to average 5.2 to 1. Underground operations will use 45 tonne haul trucks with a ramp access to produce at a rate of 4,000 tpd in the West Zone and 1,500 tpd in the Central Zone. The mining methods used are a mixture of Long Hole

Effects Of Mining on the Environment and Human Health

While underground mining, which allows coal companies to extract deeper deposits of coal, is viewed as less destructive than strip mining, the effects of mining widespread damage to the environment. In room-and-pillar mines, columns of coal are left to support the ground above during the initial mining process, then they are often taken out and the mine is left to collapse, which is known as ...

Life study for limestone operation

 · This equates to 30 years operation with a waste to stone ratio of 1.01:1. While the overall strip ratio and cost is attractive, there will be higher overburden requirements in the early years of ...


ahead of plan for 2021, at a strip ratio of 9.3 waste tonnes to ore tonnes. However, the mined grade was 35% lower than the mine plan, due to mining challenges in shallowly dipping areas of the Argyle epositD .

Massive Canadian gold mine gets green light

 · The life-of-mine average strip ratio is expected to be 2.7:1. Iamgold updated some of the project metrics in June, using $1,350 per oz. gold and $1,700 …

Lecture 4: Mining waste

LECTURE 4: MINING WASTE. This lecture covers the different types of mining waste, how they are formed and how they are disposed of or used. Mining produces large amounts of waste. In Sweden, the mining industry accounts for over 80 percent of the country''s total waste production each year. While the amount of waste can be substantial, not all ...

2021 News Releases |Orla Mining Ltd.

Mine Life years 10.4 Average Annual Gold Production ounces 94,000 Strip Ratio waste : ore 0.92 Initial Capex US$ million $134 Avg. Life of Mine Operating costs $/t ore processed $8.17 Total Cash Cost (net of by-product credits) 1 $/oz Au $490 All-In 1 $/oz Au


 · Our previous estimates of the mining operation at Karibib were largely drawn by applying parameters outlined in Desert Lion''s 2018 Karibib PEA. In summary, we envisaged the mining operation producing 0.6Mtpa at a strip ratio of 5.42 to produce 58kt of

Mining Operation: Types, Impacts and Remedial Measures

Strip mining process: As the name suggests the surface of the earth is stripped. In this process the soil and rocks that lie above is removed generally by heavy machinery and then the material is extracted. This type is possible only when the targeted materials are relatively near the surface.

Project Summary | Taseko Mines Limited

24 year mine life at a milling rate of 10,000 tonnes per day Life of mine strip ratio of 0.5:1 Total pre-production capital cost of C$870 million, including; $520 million for mine, concentrator and site infrastructure; $180 million for the converter, $100 million for offsite infrastructure including the transmission line, and $70 million for pre-stripping

Surface mining planning and design of open pit mining

 · Surface mining planning and design of open pit mining 1. This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors.


of overburden generated by mining is enormous. The ratio of the quantity of overburden to the quantity of mineral ore (called the ''strip ratio'') is usually greater than one, and can be much higher. For example, if a proposed mining project involves the extraction of

Candelaria Mining Complex | Lundin Mining Corporation

Five phases of development remain in the life of mine plan as of June 2019. The overall strip ratio of the remaining life of mine plan is 2.4:1 including ore delivered to stockpiles. The Candelaria underground, North and South Sectors, produce at approximately 14,000 tpd on average.

Leagold planning Los Filos gold mine expansion …

 · The Los Filos underground mine is currently operating at over 1,800 t/d and, in the life of mine plan, averages 1,700 t/d with mining costs of $73/t based on owner and contract mining. Reduced operating costs, improved mining efficiencies and additional drilling have enabled the update of the Los Filos underground mine plan to extend to 2021.