New Course - Empirical Methods of Resource / Reserve Estimation

This course by Alastair Sinclair (Professor Emeritus of geological engineering at the University of British Columbia) provides comprehensive coverage of the empirical methods of mineral reserve estimation and their application in the contexts of ore estimation, mine planning and grade control. The course provides a basis for integrating and balancing these functions so as to achieve an efficient mining operation. (approximate course duration 18 hrs). more »

New Course - A Global Perspective on Cyanide Use and Management

This introductory course on cyanide by Terry Mudder, Mike Botz and Karen Hagelstein (specialist consultants in cyanide usage and treatment) provides a non-technical introduction to the use and management of cyanide on a global basis, including gold production, cyanide chemistry, analysis, toxicity, treatment, risks, and management (approximate course duration 5 hrs). more »

EduMine's Interactive Tool Library is Now Open

Close to 50 online interactive tools for mining applications are now freely available, covering applications in exploration, rock mechanics, engineering, mining methods, hydrogeology, finance, mineral processing and more. From a rock mass rating (RMR) tool ... to flow in a confined aquifer ... to assessment of blasting damage. more »

The Deep Dark: Disaster and Redemption in America's Richest Silver Mine
- By Greg Olsen

On May 2, 1972, a fire broke out deep inside the Sunshine Mine, in Kellogg, Idaho, while nearly 175 men were at work. Nearly half the workers made it out safely, and there were 91 deaths.

This poignant book offers a detailed account of the fire, the toll it took on the small mining community, and the nail-bitingly suspenseful rescue operation to save the lives of two men trapped in the "deep dark" mine who survived for more than a week by eating the bagged lunches of their dead coworkers.

Olsen, author of a number of books in the true-crime genre, brings his considerable narrative skills to bear in this true-adventure tale. He tells the story in remarkably vivid detail, forcing the reader to experience the horror of the deep dark and to feel the exhilaration of the successful rescue. Review by David Pitt of Booklist. more »

It's a dog's life!!!

It is common practice in England to ring a telephone by signaling extra voltage across one side of the two wire circuit and ground (earth in England). When the subscriber answers the phone, it switches to the two wire circuit for conversation. This method allows two parties on the same line to be signaled without disturbing each other.

Anyway, an elderly lady with several pets called to say that her telephone failed to ring when her friends called and on the few occasions when it did ring her dog always barked first just before the ring. Pat proceeded to the scene, curious to see this psychic dog.

He climbed the nearby pole, hooked his test set to the lady's line, and dialed the number. The phone didn't ring. He tried again. The dog barked loudly, followed by a ringing telephone. Climbing down the pole the amazed Pat found:

• The dog was tied to the telephone systems ground post via a metal chain and collar.
• The dog was receiving 90 volts of signaling current.
• After several such jolts, the dog would start barking and urinating on the ground.
• The wet ground now completed the circuit and the phone would ring!

If you have any humorous stories aboutmining or just want to inflict misery on our readers with jokes worse then mine, we would love to get your input. Please email the editor with the subject line marked "InfoMiner Jokes".

Kidd Creek
GoldStrike.InfoMine.com

Keywords

USA
Gold
Open Pit
Underground

The Goldstrike Property is located in Eureka County, Nevada and covers approximately 9,921 acres. The property consists of the Betze-Post open pit mine and the Meikle and Rodeo undground mines. For the last decade, Goldstrike has produced about 2 million ounces of gold and is still Barrick's largest producer.

The property was first mined in 1976; the Post deposit was discovered in 1982. The Betze deposit was discovered in 1987 soon after Barrick bought the Goldstrike Property. The Meikle and Rodeo orebodies currently make up Goldstrike underground, a high-grade orebody that was discovered in 1989 and began production in 1996. The underground and open pit mines are a mile apart.

The open pit mine is a truck-and-shovel operation using advanced mining equipment. Since the mine began production it has produced over 20 million ounces of gold. The underground mine is a trackless operation, using both long-hole open stoping and drift-and-fill mining methods.

Processing facilities consist of an autoclave and a roaster with a combined design capacity of 33,000 to 35,000 tons per day. Gold is processed into doré on site and shipped to an outside refinery for processing into gold bullion.

The open pit mine has existing reserves of 16-million ounces and an expected minimum mine life of about 16 years. The Meikle and Rodeo orebodies have reserves of almost 3-million ounces and an expected remaining mine life of about five years. more »

Mine Site provides in depth information on over 50 mine's, including reserves/resources, production, mining and processing methods as well as news, links and supplier information. You can also view the Minesite pages of other mines by visiting the Minesite homepage. Feel free to contact us with any comments or suggestions you may have for Minesites.

CoMatrix™ Tower: Excellent Organic Recovery, Plus 5X Flow Rate of Standard SX Filters

Increase your copper solvent extraction efficiency while lowering cost. Consider SpinTek! The SpinTek CoMatrix™ system is specifically designed to provide excellent organic recovery and electrolyte filtering for the solvent extraction(SX) market. The system is designed to operate at five times the flow rate of traditional SX filters.

This filtration system translates to a 65% cost reduction and reduced backwash volumes of 70%. The CoMatrix™ systems are free standing, self-contained units available in a variety of standard sizes with individual unit flow rates of up to 3,300 gpm (750 m3/hr). Multiple units can provide for much higher flow rates. All vessels, media, piping, instruments and controls are provided for a completely automatic and operational filtration system. more »

New copper processing technology for Cobre Las Cruces, Spain

Outokumpu Technology has been chosen as lead technology supplier for the greenfield copper processing plant being built near Seville by Cobre Las Cruces S.A., a subsidiary of Inmet Mining Corporation. The value of Outokumpu Technology’s delivery is approximately EUR 45 million.

After successful basic engineering for the copper plant completed earlier, Outokumpu Technology’s scope of technology delivery covers process know-how and key equipment in grinding, thickening, leaching, Outokumpu VSFTM solvent extraction, tankfarm and electrowinning plant. Outokumpu Technology will also provide related supervisory services for all implementation phases from installation to commissioning. more (pdf) »