COSTS AND COST ESTIMATION T. ALAN O'HARA AND STANLEY C. SUBOLESKI 6.3.1 ESTIMATION OF COSTS A mineralized deposit should not be developed into a mine unless the estimated annual operating profit after taxes is judged to be sufficient to recover, with interest, the estimated capital cost of developing the mine. The accuracy of estimation of capital

Combined Costs: Most Mine Costs are a combination of the two. Milling (50/50) Depending on production tonnes these costs can change a lot! Because of the fixed cost component! Fixed and Variable Costs $-$10 $20 $30 $40 $50 $60 $70 $80 $90 $100 $110 $120 $130 $140 $150 $160 $170 $180 $190 $200 $210 $220

Developed an ANN model for estimating mining capital cost for open-pit mining projects with high accuracy. • Compared with the other machine learning algorithms include Random Forest, Support Vector Machine, and Classification and Regression tree. • Analyzed the influence factors on mining capital cost for estimating mining capital cost. •

CAUTIONARY STATEMENT . The Nifty Copper Open Pit Scoping Study (the Study or the Project) referred to in this report is conceptual in nature and has been undertaken to assess the potential for the redevelopment of Metals X Limited (Metals X) Nifty Copper Operation (Nifty) via an expansion of the existing open pit to mine the upper regions of the defined copper …

In this paper, in order to achieve a reliable cost model, the technical and economic data of 15 open pit porphyry copper mines have been collected. The proposed cost model is developed based on stepwise multi variate regression . The R square of the presented model was 97.53% and indicated a proper fit on the data set. In addition, the mean ...

placer mining in the estimation of costs to recover valuable States andklaska, and are based on a cost date of January minerals from placer dewits. It relies on the princiole that 1985. cost rstimsteiwll be representative only if&ul&d for The appendix provides an example of placer mine design technically feasible mining operations. Because the ...

concentration, and heap-leaching of copper using commercially available mining cost estimating software and mineral processing models of Camm (1991). This paper assesses two methods of cost-modeling for open-pit mining and heap-leaching of copper ores with copper recovery by solvent-extraction and electrowinning (SX/EW).

RANKED: Top 10 lowest cost copper mines. Reason to smile. First Quantum's Kansanshi mine in Zambia is expected to produce 220–235kt of copper, and 120–130koz of gold in 2020. Image: FQM. The ...

In 2014, the current open pit operation produced 340.4kt of fine copper in cathode and copper concentrate and 14.6kt molybdenum, 757t gold, 186.9t silver and 1.0 million tonnes of sulphuric acid at C1 copper cash costs of approximately …

The open-pit mine produced 443,000t of copper in 2011. Feasibility study is underway to switch to underground production at Chuquicamata by the end of 2018. The ore reserve under the existing pit is estimated to be 1.7 billion tonnes grading at 0.7% copper. The underground development project is estimated to cost more than $4bn.

Cost-Benefit Design of Open Pit Slopes Richard D. Call* The objective of an open pit mine plan is to obtain the maximum ore with the minimum of overburden stripping up to the limit where the incremental stripping cost equals the ... porphyry copper, there …

Open pit mines can be used in coal mining, and they are used extensively in "hard rock" mining for ores such as metal ores, copper, gold, iron, aluminum, and many minerals. In a open pit coal mine, the pit bottom would be …

Mining Cost Service is the industry standard reference for Mining Cost Estimation. This system places cost estimating data at your fingertips with conveniently indexed information to make your cost estimates faster, easier, and more credible. Monthly updates assure that you are working with the most current cost data available.

The estimation of dilution and ore loss is therefore an essential part of any Ore Reserve estimate or mine schedule. Large open pit mines are driven by the economies of scale that are achieved at the cost of less selectivity in the discrimination of ore and waste. ... is demonstrated, using examples from large open pit stratiform copper and ...

COSTS AND COST ESTIMATION Chapter, The number of mine personnel required in open pit mines may be estimated from the following formulas in which Nap is number of open pit personnel and Tp is tons of ore and waste mined daily. Nap = 0.034 TpO.8 for open pit mines in hard rock using shovels and trucks for load-ing and haulage of ore and waste (6 ...

Background information, formulae and a systematic set of procedures for estimating capital and operating costs for open pit mining equipment are presented in this paper. Firstly, equipment capital costs are required._x000D_ These can be obtained from either suppliers, contractors or from first principles. The equipment is then divided into cost elements.

I've subscribed to Mining Cost Service continuously for more than 12 years which has greatly assisted in the development of my estimating skills as a Mining Consultant. Mining Cost Service continues to be a useful reference on a wide range of topics for early stage mine planning through to 'fill the gaps' on more detailed studies.

A large Copper open pit mine in Chile has lost US$134 million over a 10-year period because of suboptimal grade control procedures based on the blast holes sampling. It was estimated by the difference between actually used blast hole sampling protocol and its optimized version. (P. Carrasco: WCSB1, Denmark 2003)

Open-pit mining methods are applicable to mining ore deposits that apex at or near the surface. If the deposit apexes below the surface, the overburden and barren capping overlying the ore must be removed in advance …

Open Pit Mine Financial Model. Allow a potential miner to see visually and numerically (annual basis) what their possible financial position would look like when starting up an open-pit mining operation. 4.00 1. Financial Model, Mining & Resources, Open Pit. Break-Even, Excel, Financial Feasibility, Financial Projections, IRR (Internal Rate of ...

Cost-efficient Transport for Open-pit Mines. An innovative technological approach to skip haulage could optimize costs and energy efficiency in hard rock mines. Open-pit metal mines are often shaped like an inverted cone, with the ore and overburden being drilled and blasted, then loaded and transported by shovel-and-truck systems.

The Cost Estimation short course is designed to provide resources industry professionals with foundational tools and techniques to perform capital, operating and business cost estimations specific to the resources sector from scoping to feasibility studies. Delivered by experienced industry leaders, this course draws from the AusIMM Cost ...

Estimation of production rate is a problem that has been looked at by many scholars. The most well-known scholar to look at the problem was H. K. Taylor who developed the empirical Taylor's Rule, which is a rule of thumb that …

All-In Sustaining Costs over the life of mine are highly dependent on mining costs and waste movement. Over the life of mine, average AISC are expected to in the lowest quartile of the cost curve at a be very competitive $1.56 per pound of copper produced, after silver credits. The estimated capital cost for the process plant is direct $49 million.

Volume 4 – Operating Cost Estimate Copper concentrates are shipped to Asia smelting operations through Stewart Bulk Terminals in Stewart, BC. Molybdenum concentrate will be shipped by truck to a Canadian refinery for processing. The operating cost estimate is based on the following:

In this paper, in order to achieve a reliable cost model, the technical and economic data of 15 open pit porphyry copper mines have been collected. The proposed cost …

2.1 Cost Categorization. In this paper, costs in open pit mines are categorized into four groups: (1) capital costs, (2) operating costs, (3) general …