#### Calculation of Ore Tonnage & Grade from Drill hole Samples

Metallurgical ContentORE RESERVE CALCULATIONSMINERAL ORE RESERVE Case 1MINERAL ORE RESERVE Case 2MINERAL ORE RESERVE Case 3 The usual method of sampling mineral deposits is to drill holes and assay the sludge or core. Though the results thus obtained may not represent the true average value of the deposit, it is on these results that estimates of practically all

#### Methods Of Calculating Tonnage In Mining

method of mining gypum downloadmania.in. methods for mining gypsum methods of calculating tonnage in mining; new methods used to size quarry aggregates; MINERAL ORE RESERVE Case 3. When two holes in the prism have a zero value, the average thickness becomes a/3, and the tonnage of ore and tonnage of copper is

#### Mineral Deposit Value How to Calculate the Potential

Before you can calculate the potential mineral deposit value, you first need to gather some specific data regarding the ore body and the individual drill results.. This required data can be found in the mining company’s press releases in which they announce their drill results.Make sure that this data is announced according to the guidelines of National Instrument 43-101 (i.e. approved by a

#### Cut-off grade estimation QueensMineDesignWiki

Calculating The Cut-Off GradeMineral ClassificationAdjusting The Cut-Off GradeReferencesBreak-Even and InternalThe most simplistic way to determine cut-off grade is through the break-even and internal method. This method is easy to use and involves minimal background information. It is preferred as a first estimate, and is most effective in the early planning phases of a project. Although the limited number of parameteLane’s MethodLane's Method was presented by Ken Lane in 1988 when he identified three distinct stages of cut-off grade application; mining, concentrating, and processing. He related these steps to the concept of Net Present Value to create a method of cut-off grade determination that maximizes present value. Lane’s Polymetallic DepositsPolymetallic cut-off grade estimation is explained hereSee more on minewiki.engineering.queensu.ca#### Calculation of Volume and Tonnage of Ore Deposit

For the calculation of the volume and the tonnage of ore deposits there is a variety of available methods to choose from, each suited for a particular deposit. These methods fall into two categories: reserve calculation on the basis of cross-sections and on the basis of longitudinal planar sections or level plans respectively.

#### Mineral resource estimation Wikipedia

Resource estimation is used to determine and define the ore tonnage and grade of a geological deposit, from the developed block model. There are different estimation methods (see below) used for different scenarios dependent upon the ore boundaries, geological deposit geometry, grade variability and the amount of time and money available.

#### Ore Reserve Calculation Mining Geology YouTube

Jun 15, 2018· This is the one of method for calculation of reserve of ore . Ore Reserve Calculation Mining Geology 2 Duration: 4:36. geoversity gpb 2,021 views. 4:36. Language: English

#### Reserve Estimation Tonnage Density

Cubical opening method Dig up a pit of 1mx1mx1m size and weight all the material this weight is tonnage factor. For sulphide ore deposit at initial exploration this method is not applicable. In case of iron ore,limestone, rock Phosphate is applicable. in the mining stage normally bulk density is determined by this method Conventional density

#### Metal Value per Tonne How You Can Determine the Mineral

As 1 gram equals 0.0321492 troy ounces, the conversion factor is calculated as: 0.0321492 34.2857 x 31.103481 = 0.0291652 (rounded 0.029). Thus, when a mining company reports a drill result of 0.145 ounces per tonne, you now know that this equals (0.145 0.029 =) 5 grams per tonne.

#### Tonnage Calculator Hedrick Industries

Please use this calculator to select which product you would like to calculate the total tonnage estimated for your project. You will need the length, width and depth of your project space to be able to get your estimated tonnage calculation. Our calculator provides an average unit weight per product and should only be used for estimating purposes.

#### Mining Valuation Techniques P/NAV, P/CF, EV/Resource

The main mining valuation methods in the industry include price to net asset value P/NAV, price to cash flow P/CF, total acquisition cost TAC & EV/Resources. The best way to value a mining asset or company is to build a discounted cash flow (DCF) model that takes into account a

#### Room and pillar mining Wikipedia

Room and pillar (variant of breast stoping), is a mining system in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillars. To do this, "rooms" of ore are dug out while "pillars" of untouched material are left to support the roof overburden.Calculating the size, shape, and position of pillars is a complicated procedure, and is an area of

#### Coal mining Choosing a mining method Britannica

Choosing a mining method. The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining. Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the choice of which method to use in extracting a coal seam depends on many technological, economic, and social factors.

#### A METHOD OF DETERMINING THE VOLUME AND TONNAGE

ton for hay that had been stacked only a few days and 350 to 380 cubic feet for hay that had stood two months or more. The United States Department of Agriculture, during the*years 1910 to 1912, carried on some investigations for the purpose of deter- mining the

#### (PDF) COST ESTIMATION FOR OPEN PIT MINES: TACKLING COST

"Total Mining cost per ton ($/t)" : A method is presented to calculate the cost of uncertainty in a production schedule based on deviations from the target production. A mixed integer linear

#### Calculation of Volume and Tonnage of Ore Deposit

For the calculation of the volume and the tonnage of ore deposits there is a variety of available methods to choose from, each suited for a particular deposit. These methods fall into two categories: reserve calculation on the basis of cross-sections and on the basis of longitudinal planar sections or level plans respectively.

#### Coal Calculations Mining SGS

These calculations are used to calculate various skeleton parameters including ash and calorific value that let you determine the grades of your coal. SGS global teams of chemists and experts use a range of coal analytical calculations and indexes to arrive at the calorific values, total hydrogen, Coke Reactivity Index (CRI) and Coke Strength

#### Mining Terminology Hawkeye Gold & Diamond Inc.

A mining company will proceed with the cost of a feasibility study generally once it has proved continuity of its ore deposits confirmed by samplings and or drilling on a relatively detailed grid that allows for fairly precise determination of tonnage, density, mineral and metal content and is that part of the orebody that economic viability

#### Valuation of Aggregate Operations for Banking Purposes

Sand and gravel was $7.65 per ton varying depending on location and grade from $3.50 per ton to more than $15.00 per ton loaded on trucks at the mine. The average mine produces approximately 200,000 tons per year, with crushed stone mines producing an average of 350,000 tons per year and the average sand and

#### 3. CALCULATION OF MACHINE RATES

3.1 Introduction. The unit cost of logging or road construction is essentially derived by dividing cost by production. In its simplest case, if you rented a tractor with operator for $60 per hour including all fuel and other costs and you excavated 100 cubic meters per hour, your unit cost for excavation would be $0.60 per cubic meter.

#### Tonnage Wikipedia

Tonnage measurements. Tonnage measurements are governed by an IMO Convention (International Convention on Tonnage Measurement of Ships, 1969 (London-Rules)), which initially applied to all ships built after July 1982, and to older ships from July 1994.. Gross tonnage (GT) is a function of the volume of all of a ship's enclosed spaces (from keel to funnel) measured to the outside of the hull

#### Ore Reserve Calculation Mining Geology 2 YouTube

Jun 15, 2018· This is the one of method for calculation of reserve of ore . Ore Reserve Calculation Mining Geology Duration: 4:49. geoversity gpb 4,016 views. 4:49.

#### Belt Conveyors for Bulk Materials Calculations by CEMA 5

belt speed, lump size/material density, maintenance, environment, temperature, and the proper CEMA series of idler to handle the maximum calculated idler load. CEMA B load rating based on minimum L 10 of 30,000 hours at 500 rpm CEMA C load rating based on minimum L 10 of 30,000 hours at 500 rpm CEMA D load rating based on minimum L 10

#### Mining Cost Service Costmine

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

#### Binning in Data Mining GeeksforGeeks

Jun 18, 2019· Data binning, bucketing is a data pre-processing method used to minimize the effects of small observation errors. The original data values are divided into small intervals known as bins and then they are replaced by a general value calculated for that bin.

#### Room and pillar mining Wikipedia

Room and pillar (variant of breast stoping), is a mining system in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillars. To do this, "rooms" of ore are dug out while "pillars" of untouched material are left to support the roof overburden.Calculating the size, shape, and position of pillars is a complicated procedure, and is an area of

#### Chapter 8 BLAST DESIGN National Park Service

Tons of Rock = Powder Factor lbs of Explosives The higher the powder factor, the lighter the load. Lower powder factor means more explosives. Example: 1.5 tons = PF of 6.25lbs BURDEN-SPACING CALCULATION From Powder Factor of 1 lb./c.y. 1. Determine borehole size. 2. Determine stemming: 24 x borehole diameter; Divide by 12 to get the number of feet.

#### How to Calculate Remaining Airspace and Compaction Rate

Jan 21, 2019· To make this calculation even more useful, you can also upload top-of-waste design. Easily view your site today compared to its TOW, all in 3D. With these parameters, spot where you’ve overfilled. All the relevant numbers are automatically calculated, and display on the calculator on the left-hand side of your screen.

#### Performance Measurement of Mining Equipments by Utilizing

Key words: OEE, Equipment Utilization, Mining, Time Losses Introduction All industries are dependent on their assets as well as mining companies. The increase in automation, compounded by the increase in the size and capacity of equipment over the years has drastically changed the consequences of equipment ineffectiveness.

#### ORE RESERVE ESTIMATION

mining. This study found that all estimating techniques overestimated the tonnage; the polygon method bY 23* the inverse-distance-squared by 26* and kriging by only 12*. A second estimate using all available drill hole data was made, and again the three methods overesti-nated the tonnage

#### Break Even Analysis How to Calculate the Cut Off Grade

Before I can calculate the cut off grade, I first need to show a basic equation which converts a troy ounce into grams per ton: 1 troy ounce = 31.1034768 grams per ton = 28.349523125 grams per tonne. As you can see, the difference between a ton and a tonne is approximately 10%. Then, you need to be aware of the following conversions:

#### Design of Bord and Pillar method in coal mines

Feb 27, 2016· Mining is the mother industry for other industries. For effectiveness in mining, different methods have been approached keeping in mind the production and safety. One of such methods is the Bord and Pillar method of mining. Bord and Pillar method of mining is one of the oldest methods. 3.

#### Longwall Mining Method and Design

Table of ContentsLongwall Mining Design FactorsSeam SequencingInteraction for Descending OrderPressure Bulb TheoryArching Theory in MiningInteraction for Ascending OrderSubsidence TroughInterseam ShearingSimultaneous and Random Orders of ExtractionGate Road Pillar DesignYield Pillar ApproachConventional Longwall Mining ApproachOther Design ConsiderationsOrientation of

#### Converting cubic volume to tonnage OnlineConversion Forums

Re: Converting cubic volume to tonnage When you say tonnage, is that register ton? Or ton as in weight? Register ton is a unit of volume equal to 100 cubic feet, about 2.8316 cubic meters. 12.096 2.8316 = 27 register ton As the register ton is a unit of volume

#### Binning Methods for Data Smoothing in data mining

Jul 30, 2020· Binning Methods for Data Smoothing. The binning method can be used for smoothing the data. Mostly data is full of noise. Data smoothing is a data pre-processing technique using a different kind of algorithm to remove the noise from the data set. This allows important patterns to stand out. Unsorted data for price in dollars

#### 3. CALCULATION OF MACHINE RATES

3.1 Introduction. The unit cost of logging or road construction is essentially derived by dividing cost by production. In its simplest case, if you rented a tractor with operator for $60 per hour including all fuel and other costs and you excavated 100 cubic meters per hour, your unit cost for excavation would be $0.60 per cubic meter.

#### Mining Underground mining Britannica

Mining Mining Underground mining: When any ore body lies a considerable distance below the surface, the amount of waste that has to be removed in order to uncover the ore through surface mining becomes prohibitive, and underground techniques must be considered. Counting against underground mining are the costs, which, for each ton of material mined, are much higher underground than on the

#### The Importance Of Dilution Factor For Open Pit Mining

Mining Project Evaluation. Dilution increases the operating costs in the mill by increasing the tonnage of material to be milled. By better understanding the root causes of the dilution, quanitiying it, and planning accordingly, it can be controlled and reduced. Knowledge Centre.

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