increase the diameter of the hole without running a full gauge tool into the hole. It is hydraulically operated. As the pump pressure increases, a piston inside is driven down, thus forcing three arms with cones to extend. With arms extended, the hole can be opened to the designated size.
underground mining equipment is specialized and expensive. A number of surface mines operate 24 hours/da y and almost 365 days/year in order to use open pit machinery for as many hours as possible, thereby reducing the number of machines required. In contrast, underground operations are often interrupted by the need
Rathole Mining. Courtesy of the Nevada Historical Society. ... The bits are of varying length so that as a hole progressed, shorter implements could be exchanged for longer ones. The thin metal rod to the right of the bits is a spoon, an implement used to drag debris from a drill hole.
A drilling rig is an integrated system that drills wells, such as oil or water wells, in the earth's rigs can be massive structures housing equipment used to drill water wells, oil wells, or natural gas extraction wells, or they can be small enough to be moved manually by one person and such are called rigs can sample subsurface mineral deposits, test rock ...
Whether you need to excavate, transport or process ore, rock or overburden more efficiently, our comprehensive range of cuttingedge surface and underground mining equipment is designed to increase your productivity and boost your bottom line.
Gold prospecting equipment and gold mining equipment. GoldHog produces and sells gold prospecting equipment to 35 countries around the world. We have over the past 7 years become the industry innovator in gold recovery and gold mining equipment.
We have designed and introduced a variety of rotary blasthole tools to meet the increasing drilling needs of our customers. All of our blasthole tools, including the Sure Wrench, are designed to provide top performance and value, including less rig maintenance, more productivity and lower operating costs.
Epiroc is a one of the leading drill rig manufacturers in the world. We offer rock drilling machines and other equipment for many different applications. For example; oil and gas, construction drilling, quarrying, surface mining, underground mining, exploration drilling and …
Find the mining and drilling equipment for almost any mining phase at Ritchie Bros. unreserved auctions, from surface mining to underground mining. Find the directional drills, excavators, mining shovels, rock trucks and other equipment needed to prepare mine sites, build infrastructure and extract precious metals, minerals and aggregate.
Dec 21, 2015· The most common types of mining equipment vary depending whether the work is being carried out above or below ground or mining for gold, metals, coal or crude oil. From drilling machines to excavators, crushing and grinding equipment – the mining industry comes …
Vermeer Equipment Suppliers South Africa was established in 2004 and services and supports the SubSaharan Africa region. We provide expert sales and service to customers who have chosen to use our equipment, and strive for higher levels of production and profitability.
We’ve been providing quality underground mobile mining and tunneling equipment for nearly 30 years. Our product line includes, but is not limited to: jumbo drill rigs, LHD’s underground loaders, scissor lifts, flatbed boom trucks, fuel lube trucks, bolters, underground trucks, narrow vein custom equipment, used equipment, parts.
Jan 01, 2019· Rat hole mining is a process of digging holes to make narrow tunnels to extract coal. It is a illegal process which is still practiced in some north eastern region. Rat hole mining can be done in two ways: cutting :The tunnel is dug from ...
New way to sell mining equipment online Ritchie Bros. Auctioneers and IronPlanet have joined together to offer you unparalleled choice, innovative solutions and expert advice on the best way to manage the sale of your assets through an easytouse online platform with multiple price and timing options.
Epiroc offers state of the art drilling equipment for underground mining and tunneling. Our comprehensive range of rigs cover all your needs for production drills and face drilling rigs. ... and optional automated features for underground production drilling and blast hole drilling in mining and tunneling. Safety is the bottom line.
Hard rock equipment We have an extensive product suite of hard rock mining equipment, including hydraulic jumbo drills, drifters, loaders, and trucks. In addition, we offer a full line of raiseboring tools and blasthole drilling tools .
Jan 28, 2013· Large mining equipment | Mining Metallurgy. Giant earth moving equipment is used to …Huge drills like blasthole drills are used to … the use of continuous miners ensures that the mining process does … »More detailed
A rathole is a hole in the rig floor, 30 to 35 feet deep, lined with casing that projects above the floor, into which the kelly is placed when hoisting operations are in progress.. This is either done by the portable rig that drills the conductor hole or can be done by the primary rig after riggingup. Potential Hazard: Falling or stepping into an uncovered rathole.