How do you calculate life of a mine?
The direct relationship between mine life and ore tonnage could not be determined from the present data because too few mines were depleted. However, life can be estimated from daily capacity estimated in Equation 1 and ore tonnage as: L = T / (C 350) – ~ (3) assuming 350 operating days per year.
What is a good g/t for gold?
Gold drilling results are reported in grams per tonne (g/t), and anything over 2 grams gold/tonne is deemed to be good.
What is a life of mine plan?
The Life of Mine Plan (LOMP) is the formally approved long-term plan for the mine. It is selected after conducting an SOA, and is the plan identified as best delivering the corporate goal. It establishes the framework within which all other shorter-term plans are developed.
What is working life of a mine?
The average life expectancy in the coal mines for those starting work at 15 y was found to be 58.91 y and 49.23 y for surface and underground workers respectively.
What is head ore?
head grade means the grade of ore coming into a processing plant; Sample 1.
Which country has the highest grade of gold?
1. China – 383.2 tonnes. For many years, China has been the top producing nation, accounting for 11 percent of global mine production.
What are 4 mining methods?
There are four main mining methods: underground, open surface (pit), placer, and in-situ mining. Underground mines are more expensive and are often used to reach deeper deposits.
What is a rule of thumb?
The “rule of thumb” is an idiomatic expression referring to a set of general rules with no written formulation. It’s a way of calculating an approximate distance, length, method, task, or protocol based on your practical experience with the job, rather than relying on theory.
Is the mining industry handbook worth it?
Handbookmay be controversial, its “Rules of Thumb” and “Tricks of the Trade” sections capture the art (experience) of the mining industry. I encourage you to use the Handbook, and use it wisely. RESPONSE Mining industry response to the book continues to be incredible.
What data is required to select a mining method?
Towner and Kelfer CHAPTER 3 MINING METHODS 37 2008 Stantec Consulting Ltd. 3.4 Mining Method Selection To select a mining method, certain data describing the orebody is required. • Geological cross sections and a longitudinal section • Level maps • Block model (grade model) • Geomechanical characteristics of the host and surrounding rock.
What are the rules of thumb metal price?
7.2 Rules of Thumb Metal Price • The long-term average price of a common mineral commodity (the price best used for economic evaluation in a feasibility study) is 1.5 times the average cost of production, worldwide. Source: Sir Ronald Prain Pre-production Capital Cost