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Showers at The Dry where the miners’ lockers were kept.
Tin was mined at Geevor from the 18th Century under the name East Levant Mine until 1840, then North Levant from 1851 to 1891, when it was closed. It became Geevor Mine in 1911. Tin mining was badly affected by collapses in the price of tin in the 1980s, but despite efforts to keep the mine running, it closed down in 1990, the pumps being turned off in 1991, flooding the mine. There is tin in the mine, but extraction is economically unviable. Later it was turned into a tourist attraction.
Protest rally called by Mining Dependents at Kranti Circle, KTC Panaji on 19.3.18. Supreme Court stopped all mining activities effective 16.3.18 after cancelling all mining permits. Protestors blocked traffic from both bridges and other entry points to the city. As a last resort, protestors were Lathi charged around 3pm. minister Sudin, Bapa of Taxi Union etcVideo youtu.be/CzaV1Hyr8Us
Mineral Exploration Roundup 2015 conference brings together prospectors, geoscientists, investors, suppliers and those interested in the mineral exploration industry.
Protest rally called by Mining Dependents at Kranti Circle, KTC Panaji on 19.3.18. Supreme Court stopped all mining activities effective 16.3.18 after cancelling all mining permits. Protestors blocked traffic from both bridges and other entry points to the city. As a last resort, protestors were Lathi charged around 3pm. Nelson Albuquerque Video youtu.be/CzaV1Hyr8Us
Publication: Engineering News - Record
Date of Publication: Sept 5, 1946
This image has been digitally watermarked and is subject to copyright, use without permission prohibited. © C. Hille
Day 3, our first alpine views, stunning colours caused by minerals in the mountains, old mines, and our first experience with viscious mountain horse flies.
Audrey Headframe Park
Jerome, Arizona
Arizona Republic - March 27, 1962
Fifty-Year-Old Vehicles Displayed in Jerome
Why Were Locomotives and Ore Car Left in Mine Tunnel Since 1908?
Two electric locomotives and one ore car were put display on recently were put on Main Street. The locomotives, "motors" to the miners, and the ore car are 36-inch gauge, the same size track used by the narrow gauge railroad that traveled between Jerome Junction and Jerome beginning in 1984 The motors and cars were uncovered recently when the Big Hole Mining Co. opened a southwest drift in the course of its open-pit operation.
Many questions bounce about and come up unanswered. Why weren't the motors and cars were they left scrapped when the smelter was dismantled? Why in the underground workings? Were they cut off in a mine shaft cave-in? Were they forgotten for almost 50 years? [photographers note: this is extremely common, most cumbersome equipment was abandoned underground after mine closure. It was often assembled underground and getting it out was not worth the trouble or scrap value.]
The motors are not completely a puzzle, however. One motor was between 1905 and 1908. Using the factory motor for a sample, the second motor bought was built at the mine.
Locomotives and Ore Cart-250-volt trolley-powered mine locomotive using 36-gauge rail. Top speed 8 MPH
Old mining exploration road leading up to the Burwash Uplands. Following the road sure beats thrashing through 12 feet tall willow bushes.
And old "Beam" single-cylinder steam engine used in Colorado mining. Used for pumping and lifting, these engines were not efficient and were replaced by other types. But gold (and silver, ...) were powerful incentives so the mining folks did not wait for efficiency - they wanted things "yesterday", if not sooner.
This cold weather, the bees are just laying on the Rhody leaves hoping the sun will come out and warm them. Easier to photograph them this way but I would settle for chasing them in the sunshine.
Exposed coal is piled to make loading easier and more efficient / El carbón expuesto es apilado para facilitar y hacer la carga más eficiente.
Did you know that Cornwall has over 300 glorious beaches? It also has the UK's longest stretch of coastline at some 435 miles .... and over a three week period I only walked 100 miles of it.
This is a ship used to defend mining ships from pirate attacks and chase away unauthorized miner vessels around asteroid belts.
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Gee, Ms. Andrena sp., leave some pollen for the other bees....Colorado Springs, Colorado. April 27, 2019.
In November 2017, the International Institute for Environment and Development (IIED) held its second country dialogue on artisanal and small-scale mining (ASM) in Geita, Tanzania.
The dialogue followed months of preparatory work with Tanzanian partners HakiMadani and MTL Consulting.
Participants spent two days visiting four-small-scale mines in Geita, one of Tanzania's main gold-producing regions. This was followed by two days in workshops discussing how to make ASM in Tanzania more sustainable.
Women are often employed as rock crushers in small-scale gold mines (photo at Kadeo Gold mine).
More details: www.iied.org/time-right-for-dialogue-about-sustainable-as....
Photo credit: Steve Aanu
The town of Butte, Montana (pronounced “byoot”) is known as the “Richest Hill on Earth” and "The Mining City". The Butte Mining District has produced gold, silver, copper, molybdenum, manganese, and other metals.
The area's bedrock consists of the Butte Quartz Monzonite (a.k.a. Butte Pluton), which is part of the Boulder Batholith. The Butte Quartz Monzonite ("BQM") formed 76.3 million years ago, during the mid-Campanian Stage in the Late Cretaceous. BQM rocks have been intruded and altered by hydrothermal veins containing valuable metallic minerals - principally sulfides. The copper mineralization has been dated to 62-66 million years ago, during the latest Maastrichtian Stage (latest Cretaceous) and Danian Stage (Early Paleocene). In the supergene enrichment zone of the area, the original sulfide mineralogy has been altered.
Seen here is the Continental Mine, also known as the Continental Pit. It is the only active mine in modern Butte. Mining here was started in 1980 by the Anaconda Copper Mining Company - it is currently owned by Montana Resources. The mine is situated on the eastern side of the Continental Fault, a major Basin & Range normal fault in the Butte area with about 3500 feet of offset. Over 100 different copper minerals are known from Butte to the west of the fault - many are minor minerals. East of the fault, lower grade rocks are present. The Continental Mine targets this low-grade deposit, which consists of disseminated copper sulfides plus copper- and molybdenum-bearing hydrothermal veins that intrude the BQM. Minerals include chalcopyrite, molybdenite, malachite, azurite, and cuprite. A secondary biotite mica halo is present around the deposit - the biotite is derived from hornblende amphibole.
Copper and molybdenum concentrates are produced at the Continental Mine, but they are not smelted locally and not even smelted in America. Concentrates are sold around the world, where material is smelted and the metals are produced. America shipping rocks overseas and buying back the finished product is the behavior of an underdeveloped country - America is not interested in smelting anymore - a sad reality.
When I visited in 2010, the Continental Mine was making 50,000 to 52,000 tons of ore each day. This mine can operate down to an ore grade of 0.1% copper. Most of the mineralization is disseminated copper, but veins are also present. Two stages of mineralization occurred in the Butte area - a porphyry copper system and a main stage system with large veins. The bottom of the porphyry copper system is ~ less than 12,800 feet below the surface. Veins peter out at 5600 to 5800 feet below the surface. At the Continental Mine, veins are small - they're veinlets less than 6 inches wide.
Mining is done 24 hours a day, 365 to 366 days per year. There's 1 to 2 days of down time at the mill. During those days, mining stops and waste material is moved. The ore:waste ratio is 8:10 (= strip ratio). The alluvial overburden consists of 7 paleosol horizons, including some caliches - the lime content results in an average pH of 8. The caliche material can be used to treat acidic materials.
"An ore deposit is a mine if it can stand total mismanagement and still make money."
This is a little Lego Ideas concept I had rolling around for awhile now. It is a lunar mining facility run by a group of six robots. I've always had a deep love for the older space themes Lego made during the late 80's mid 90's. Things like Blacktron, or Unitron, or insectoids, they all were quite inspiring and spectacular to me!
This set proper, took little over a week to build, with a few hiccups here and there. The base itself took the longest to build, and was the one that underwent the most redesigns. It was either too crowded to fit the details I wanted inside or just way too big and looked a bit off.
If you like this build and think it would make for a great Lego set, then you can help support it on Lego Ideas! ideas.lego.com/projects/149128
Review in portuguese: oficina.blogs.sapo.pt/review-lego-31115-space-mining-mech...
Unboxing and timelapse building: www.youtube.com/watch?v=Y7r71qzMJ8g
According to the structure and application, vibrating feeder can be divided into four types: GZG type, ZSW type and GZT type. This series of vibrating feeder is widely used in coal industry for quantitatively sending the raw coal and coal powder from the storage bin to the material receiving equipment, and it has such features as fast start, stable stoppage, low maintenance rate, convenient installation and simple structure, so that it is the ideal equipment for feeding materials in the coal industry.