• Home Cerrejón

    This project consists in moving a stretch of 3.6 km farther north by 700 metres, duplicating the natural physical and biotic conditions in the lower basin of Bruno Creek. The location is on Cerrejón licensed property with no communities nearby.

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  • Cerrejón Wikipedia

    Cerrejón is a large open-pit coal mine in Colombia. It is located in the southeast of the department of La Guajira, close to the border with Venezuela.

  • Country: Colombia
  • Proyecto La Puente Cerrejón Minería Responsable

    The rock and dirt excavated was hauled to build the embankment road surrounding the mining pit. In order to keep access open to the mining pit, around 160 metres on the internal road had to be rerouted. In addition, a concrete bridge with a 30 m span was built over the new course. 3.

  • CERREJÓN COMMENTS ON THE CINEP REPORT “MINING,

    CERREJÓN COMMENTS ON THE CINEP REPORT “MINING,AGRARIAN AND ENVIRONMENTAL CONFLICTS IN SOUTHERN LA GUAJIRA” June 28, 2016 although it is true there have been occasional events of slides of waste rock and coal to these bodies of which consists in lining them with Concrete Canvas to reduce

  • cerrejon al mine waste rock numismaticaleuven.be

    Death threats, mining waste, and Covid Know More. 30 Mar 2020 Death threats, mining waste, and Covid-19 are affected by the Cerrejon coal mine (owned by London-listed Anglo American, BHP and Between a Rock and a Hard Place: Investor-State Arbitration and Mongolia's Rapidly.

  • Nuestra empresa Cerrejón Minería Responsable

    Cerrejón is one of the largest open-pit coal-export mining operations in the world. The company is an important actor in the Colombian economy and the driving power of La Guajira, the region where our production activity takes place. It involves the exploration, extraction, transportation, loading on ships, and export of coal of various qualities

  • (PDF) Characterisation of cemented rock fill materials for

    as waste rock physical properties (PSD, SG and Bulk density), waste rock mechanical properties (UCS), curing time, temperature, humidity, mixing water and water cement ratio of the mix. 6.

  • Work with us Cerrejón, Minería Responsable

    At Cerrejón, we are commited with the training of the youth of La Guajira and the rest of the country. Therefore, we invite university students interested in doing their work practices with us to participate in the call for applications starting in May and October of each year by registering on our web page at cerrejon /Trabaje con nosotros.

  • Analysis of the Transport and Fate of Metals Released from

    Historically, mine waste had been piled up outside the Gold King mine entrance for many years. The initial load of metals contained in the GKM release increased significantly as the mine water traveled down the hillslope and along Cement Creek, picking up additional metals from the waste pile and streambed along the way.

  • cerrejon c o cmc coal marketing company ltd

    Cerrejon Coal Company (formerly know as Carbones del Cerrejón LLC, is the largest coal mining company in Colombia, with major mines in the Department of la Guajira. It owns and operates the Cerrejon coal mine and the Puerto Bolivar coal export terminal in northern Colombia. Read more

  • The carbon vault Science

    The CO2-hungry waste from the diamond mine is an exotic deep-earth rock, shot up to the surface in the volcanic eruptions that bring up diamonds. But a wide array of rock and mudlike wastes from mining, cement and aluminum production, coal burning, and other large-scale industrial processes share a similar affinity for the greenhouse gas.

  • Crushed mining waste could replace 10% of cement used in

    Dec 02, 2018· Ten percent of the cement we use in concrete could come from crushed mining waste, say researchers from the Technical University Of Denmark (Danmarks Tekniske Universitet DTU). Adding the mining waste would not undermine the strength of the materials. Giant piles of mining waste worldwide are waiting for the cement industry to resurrect them.

  • Red mud is piling up. Can scientists figure out what to do

    Aug 20, 2020· Red mud is piling up. Can scientists figure out what to do with it? By Robert F. Service Aug. 20, 2020,2:00 PM. Practical and glamorous, aluminium

  • Potential use of mine tailings and fly ash in concrete

    In order to reduce emissions of CO 2 from cement production and avoid severe environmental pollution from the deposition of mine waste, this study investigated the possibility of utilizing mine

  • Mine Waste an overview ScienceDirect Topics

    More recent estimated quantities of mine waste are as follows: • The world’s iron, copper, gold, lead, and bauxite (aluminum) mines together generated 35 × 10 9 t of waste in 1995 alone [3].. The South African gold mining industry produced 7.4 × 10 5 t of gold tailings in the decade from 1997 to 2006, that is, 7.4 ×10 4 t a −1 [4].. All gold mining waste produced in the past century

  • Are You Mining Minerals for Cement, or for Concrete?

    Cement is the grey powdery stuff that when mixed with sand, rock, gravel and water forms concrete. The concrete is the final product used in buildings, roads, infrastructure, etc. You can think of cement as the “glue” that holds the sand and gravel and re-bar (reinforcement bar) together to make concrete.

  • Mine wastes management Mining and Blasting

    4.5.1. Waste rock Mining operations generate two types of waste rock overburden10 and mine development rock. Overburden results from the development of surface mines, while mine development rock is a by-product of mineral extraction in underground mines. The quantity and composition of waste rock

  • Bulking/Swell of Excavated or Mined Materials

    List of Bulking/Swell factors for various materials. The swell factor expressed in percentage is the amount of volume increase from bank volume (undisturbed, in place state) to loose volume (disturbed, excavated state) of the material due to voids (air pockets) added to the material after excavation.

  • Use of coal waste as fine aggregates on concrete blocks

    production of concrete blocks for paving using coal mine waste as fine aggregate. Concrete blocks were produced with coal waste replacing sand in 0%, 25%, 50%, 75%, and 100%. The compressive strength was evaluated in the concrete blocks at 7, 28, and 90 days. Static tests by acid-base accounting methods were carried out to evaluate the

  • Utilizing Mine Tailings as Substitute Construction

    Mine tailings (MT) have been used in previous studies as substitute construction material to recycle waste products, especially in hollow blocks and bricks production and as masonry mortar. This study investigated the use of Philex copper-gold mine tailings (PSKDT) in roller compacted concrete (RCC) production, a mining waste material consisting of finely grinded siliceous particles was

  • Crushed mining waste could replace 10% of cement used in

    Dec 02, 2018· Ten percent of the cement we use in concrete could come from crushed mining waste, say researchers from the Technical University Of Denmark (Danmarks Tekniske Universitet DTU). Adding the mining waste would not undermine the strength of the materials. Giant piles of mining waste worldwide are waiting for the cement industry to resurrect them.

  • The carbon vault Science

    The CO2-hungry waste from the diamond mine is an exotic deep-earth rock, shot up to the surface in the volcanic eruptions that bring up diamonds. But a wide array of rock and mudlike wastes from mining, cement and aluminum production, coal burning, and other large-scale industrial processes share a similar affinity for the greenhouse gas.

  • Superfund Sites in Reuse in Colorado Superfund

    Nelson Tunnel/Commodore Waste Rock. The Nelson Tunnel/Commodore Waste Rock Pile Superfund site is about 1 mile north of Creede, Colorado. The Site was mined from the 1890s until 1976 to produce silver, gold and other metals. The Nelson Tunnel discharges acid mine

  • Potential use of mine tailings and fly ash in concrete

    In order to reduce emissions of CO 2 from cement production and avoid severe environmental pollution from the deposition of mine waste, this study investigated the possibility of utilizing mine

  • Utilizing Mine Tailings as Substitute Construction

    Mine tailings (MT) have been used in previous studies as substitute construction material to recycle waste products, especially in hollow blocks and bricks production and as masonry mortar. This study investigated the use of Philex copper-gold mine tailings (PSKDT) in roller compacted concrete (RCC) production, a mining waste material consisting of finely grinded siliceous particles was

  • Red mud is piling up. Can scientists figure out what to do

    Aug 20, 2020· Red mud is piling up. Can scientists figure out what to do with it? By Robert F. Service Aug. 20, 2020,2:00 PM. Practical and glamorous, aluminium

  • Characterisation of cemented rock fill materials for the

    are construction of waste rock bund and bogger stop, batch up cement slurry, tram waste rock and cement slurry, mixing CRF with bogger and filling into the stope. Mixing and filling CRF samples with bogger at underground stockpile is presented in Figure 4. A schematic of cemented and uncemented rock filled stope is shown in Figure 5. Figure 4.

  • Mine Waste an overview ScienceDirect Topics

    More recent estimated quantities of mine waste are as follows: • The world’s iron, copper, gold, lead, and bauxite (aluminum) mines together generated 35 × 10 9 t of waste in 1995 alone [3].. The South African gold mining industry produced 7.4 × 10 5 t of gold tailings in the decade from 1997 to 2006, that is, 7.4 ×10 4 t a −1 [4].. All gold mining waste produced in the past century

  • Use of coal waste as fine aggregates on concrete blocks

    production of concrete blocks for paving using coal mine waste as fine aggregate. Concrete blocks were produced with coal waste replacing sand in 0%, 25%, 50%, 75%, and 100%. The compressive strength was evaluated in the concrete blocks at 7, 28, and 90 days. Static tests by acid-base accounting methods were carried out to evaluate the

  • Mining Waste Special Wastes Wastes US EPA

    Mining waste; phosphate rock mining, beneficiation, and processing waste; and uranium waste are three of the six special wastes identified. October 21, 1976 —Congress passes the Resources Conservation and Recovery Act (RCRA) (Public Law 94-580) which requires EPA to develop regulations governing the identification and management of hazardous

  • Investigation of radiation absorption coefficients of lead

    Jun 10, 2018· The samples were prepared by altering the amounts of heavy aggregates such as lead–zinc mine waste, Magnetite, Limonite, and Barite at 25%, 50%, and 75% ratios, and concrete samples were prepared in C16/20, C25/30, and C35/45 concrete strength grades to determine the effects of these grades on radiation absorption properties.

  • Sustainable use of mine waste and tailings with suitable

    cast mining involves removal of complete waste rock to expose the ore body or coal. The process of removing the waste bound to damage the natural ecosystem by producing various types of pollution like land degradation, air pollution, dust pollution etc. The waste produced is generally dumped outside the mine in the form of overburden dumps.

  • Environmental Risks of Mining

    Underground mining has the potential for tunnel collapses and land subsidence (Betournay, 2011). It involves large-scale movements of waste rock and vegetation, similar to open pit mining. Additionally, like most traditional forms of mining, underground mining

  • Underground Mine Backfilling in Australia Using Paste

    May 13, 2015· Underground mine backfilling is a form of ground improvement that has to be carried out in the mine sites. The backfilling provides ground support and regional stability, thus facilitating ore removal from nearby regions. The large underground voids created by the ore removal are backfilled with the waste tailings in the form of paste fills, hydraulic fills, and others.