Blogs
Manic Street Preachers perform on the centenary of UK’s worst ever mining disaster
The Welsh rock band Manic Street Preachers will the the star of the ceremony that will mark the centenary of the Senghenydd coal mining disaster of October 14th, 1913. The accident – the worst in the history of the mining industry in the United Kingdom – killed 439 miners. The disaster was caused by an explosion that probably started due to the ignition of methane,
15 Insane mining accidents
From overturned trucks to huge fires, as well as crushed vehicles… Here’s a collection of some really mind boggling accidents that have occurred in the mining industry. Do you have the best gold mining equipment? 1. Dumper corner navigation fail Wrong turn, mate… And now what? 2. Just how did he loose a gear? Looks like this truck is not
Flotation Column Design
Here is a classic Flotation Column Design with air spargers, froth launders and wash water header/tub. Column Flotation Cells make great “grade machines” but are know as weak on recovery. Low energy, low recoveries at each end of the size particle spectrum.
A closer look to the Autonomous Haulage System used by Rio Tinto
Imagine if a 50-foot robot truck could take dangerous work away from human miners… That’s exactly what is happening in the mines operated by the major company Rio Tinto. In Australian pits, there’s a series of robotic trucks that load, haul and dump ore and waste rock at open pit mines, a job that used to be done by workers.
Mercury from illegal gold mining is poisoning Peruvian children
The rivers in Peru’s southeastern Amazon area are being poisoned by toxic levels of mercury coming from illegal gold miners. And the worst is that, according to a new study made by the Carnegie Amazon Mercury Project, this leakage is posing serious health risks to the local children. The report says that native communities are registering levels of mercury almost five times higher than
15 Awesome mining memes
Mining is definitely a serious business, but some of the people in the industry can still be funny. At Mining Examiner, we mind about the lighter side of the business, so here’s a list of the best mining-related memes. 1. Paradoxical activist Just to use in case of emergency… Is taking a picture of my veggie meal an emergency? I
10 Awesome mining accidents survival stories
Table of Contents1. Copiapó mining accident2. Sago mine survivor3. Beaconsfield mine collapse4. Cabeza de Negro mine accident5. Chile trapped miner Torres Lopez6. Ballarat gold mine collapse7. Saskatchewan mine on fire8. Halemba mine collapse9. Furuixiang coal mine10. Dahlbusch colliery rescue In 2010, Terence Foreback, the New Mexico state mine inspector, is quoted to have said that “while there are many inherent risks
13 Mining blogs you need to read
In our pursuit to keep you informed about all there is to know in the mining field, we present you with a list of some of the most informative blogs on mining. 1. Mining Facts Org The impact of mining on Canadian communities and on the economy is the main focus of this blog, as well as all the issues
Fairtrade International reaches 12 African mines to produce ethical gold
Table of ContentsLufta Weja, Golden Hainga workerRenatus Nsangano, mine owner The gold mining industry in Tanzania is looking to make a revolution with the help of the initiative Fairtrade International. The idea was recently announced and is going to impact 12 mines in Tanzania, Uganda and Kenya, creating the first batch of African ethical gold within a year. The goal
Metallurgical Accounting Formulas | Concentration and Recovery in Mineral Processing
Have you been looking for a quick way how to calculate your flotation circuit’s metal recovery? You have no concentrate weights all you have are metal assays. Here are the assay based recovery formulas you can use for your metallurgical accounting. Using these formulas, the Metallurgical/Metallurgy performance of the concentration plant or of a particular mill circuit is readily assessed. They are
SAG Mill Ball Size Evaluator | Evaluation Factors | Calculate Diameter
Lets calculate/select/pick a new ball for your SAG mill. Now, lets suppose you have a SAG Mill and Ball Mill that are not drawing full kW Power. The SAG Mill has a “small” circulation load of oversize given be the 3/8″ trommel screen and the 1/2″ x 1 1/4″ discharge grates. The load of 4″ balls in this SAG is “good”
Mining technology firm creates new system to process platinum
The mineral processing plant manufacturer Appropriate Process Technologies (APT) is currently changing its strategy to target platinum miners, in Zimbabwe. The company is designing a new modular platinum gravity recovery system that can be used to process primary ores. The firm’s chief executive, Kevin Peacocke, said in a statement that: We are focusing more on designing and incorporating modular platinum group metal specific
Calculate Recoveries with 2 or 3 Product Formulas | Poly-metallic Metallurgical Accounting
Here is the formula you need to calculate Metal Recoveries using Assays only. You have two products/concentrates. This will save you time in your metallurgy accounting calculations. Some call the same formula the two (2) product other the three (3) product formula. Frequently, a concentrator will mill a complex ore requiring the production of two separate concentrates, each of which is
Mineral Processing Calculators
Table of Contents911Metallurgist CalculatorsS.G. Math & ConversionCirculating LoadsMetallurgical Accounting | Formula for Calculating Metal Recovery A Metallurgist needs certain toll mineral processing calculators or tools. 911Metallurgist Calculators Calculate the Flotation Cell & Conditioner Capacities/Volume Need in a Circuit S.G. Math & Conversion Calculate the Specific Gravity or Ores and Rocks How to convert a Pulp Density (%Solids) to SG Specific Gravity Circulating Loads
Flotation Reagent Metering Pumps
I recently did a reagent plant trial and worked with a pretty nice flotation reagent metering pumps. The pump is supplied by http://www.pmps.co.za This portable reagent supply unit is a mechanical diaphragm metering pump. As see on http://www.pmps.co.za/obl-mechanical-diaphragm-dosing-pump They even had “Water Driven Pumps” Other pumps I never worked with include http://www.awe-ltd.co.uk/products/dosing_pumps_electronic.html and http://www.lutzjescoamerica.com/index.php?id=1645 Also https://redesign.911metallurgist.com/blog/mibc-frother-pump
10 Insane Russian mines
Table of Contents1. Yakutia Mir Mine2. Kupol Russian Arctic Mine3. Coal-pit “Podmoskovnaya”4. Kuzbass Leninsk Coal Mine5. Lenin Mine6. Lake Baikal Deposits7. Sukhoi Log Gold Mine8. Kuznetsk Coal Mine9. Kraznokamensk Mine10. Kolyma Mines Russia’s size and geographic conditions lead to the existence of many amazing mineral deposits that make the nation a hub for mining activities. Some of the world’s most incredible
Do I Need Bigger and Larger SAG Mill Balls
How do you know if a larger SAG ball will increase your tonnage and how to select it? When is it time to change to a larger Ball in your SAG Mill? It’s difficult to generalize on SAG mill ball size selection as it depends on a number of factors: Ore properties Level of impact breakage in the mill (speed,
AngloGold Ashanti is testing innovative gold mining technology
The big mining company AngloGold Ashanti is testing a new technology, created to substantially increase South Africa’s gold reserves. The firm is betting on autonomous deep level mining to protect its workers and increase production and revenue. Miners cannot go deeper than five kilometers into mines due to safety risks. Although AngloGold’s deepest mine – the Mponeng deposit – is “only”
Abandoned Mines -TOP 14
What happens to the big or even smalls mines we now see providing tonnes and tonnes of ore when their precious metals end? The workers leave and the sites stay abandoned for decades. Here’s a collection of some amazing inactive and abandoned mines. 1. Organ Mountains Located in New Mexico (USA), this huge mine was established as a mining camp before the American
Atlas Copco and Rio Tinto innovate together in the autonomous surface drilling field
The surface mining industry has just overcome a new milestone: a surface production drill completed a computer-generated drill pattern without human interaction for the first time ever. The Atlas Copco D65 crawler-mounted and articulated drill – developed by Atlas Copco Australia after a partnership with Rio Tinto – levelled, drilled and moved between rows as directed by computer-generated instructions. The researchers started working on
BHP spends $1.5 millions in breakthrough eye-tracking technology to increase security
Looking to improve the safety levels at its mining sites, BHP is installing the innovative Driver State System with breakthrough eye-tracking technology, developed by the company Seeing Machines, in 110 trucks. The big mining firm decided to invest $1.5 millions in the technology after a positive trial that involved 17 trucks at Mining Area C and Eastern Ridge, in the Pilbara area (Australia).
Ancient Israeli copper mines belonged to the legendary King Solomon
Copper mines that scientists thought belonged to the Egyptians in the 13th century were actually originated three centuries later, during the reign of the legendary King Solomon. The finding was disclosed by Dr. Erez Ben-Yosef, from the Tel Aviv University’s Jacob M. Alkow Department of Archaeology and Near Eastern Cultures, who is coordinating an archaeological excavation at the location. The evidence gathered from
Authorities are fighting to lift iron mining ban in India
The Indian ministry of mines wants the government to lift the ban on iron ore mining in the country’s key states, including Goa and Karnataka. The exportation of this valuable substance, mainly used to produce steel, has dropped more than 70 percent over the past years, recently revealed the Business Standard. The Supreme Court will receive an affidavit filed by
Refractory Gold Processes
Gold can be leached and extracted/recovered in several ways. Even if you gold is “refractory” in pyrite or arsenopyrite, you can still get much value from your ore/rock depending on the economics of capital and operating cost. The cheapest and fastest option is to simply grind and CIL the whole thing according the the process flowsheet here shown. The next