This paper reviews socio-economic and political impacts of the extractive industry based on a global literature review. The paper reveals 27 different impacts (23 socio-economics and 4 political ...
Mining Methods. Most of the world's gypsum is produced by surface-mining operations. In 2022, only three underground gypsum mines were in operation in North America, one each in Indiana and Iowa in the United States and one in …
Hydrosmart resonance technology was applied on a 90mm mineral laden pipe in the main pit at Broken Hill Operations (CBH Resources, Rasp Mine). The existing problem there was gypsum (calcium sulphate) buildup in pipes. This was partly due to calcium oxide added by the operators in order to harvest zinc, lead and silver.
Gypsum occurs naturally around the world and is mined in places like Thailand, Brazil, Russia, the US and the UK. The substance is soft and white or grey in colour and is extracted with surface mining. After extraction, it is crushed inside industrial machines and then sorted into pieces of different sizes depending on their intended commercial ...
In most open pit gypsum operations, benches are drilled and blasted using ammonium nitrate as the explosive. Because gypsum is so soft, most drills can drill through it at a rate of roughly 23 ft per minute. Sometimes the drill holes …
Aiyaz Farooq, 36, of Bagna Salamabad village in Jammu and Kashmir's Baramulla district has been fighting for the last few years to stop the gypsum mining going on in his area.. This mountainous region is rich in gypsum reserves. Bagna Salamabad, Farooq's village that's home to over 1,000 s, has 12 mines in its vicinity.
Problem statement: Mining activities involve the removal of the vegetal cover and the soil organic layer, causing a severe environmental impact. In Northeast Brazil, 40% of the world's crude gypsum is found in a semiarid area, making this region responsible for 95% of the gypsum demand in the national market. Although economically important, this activity is harmful to the …
The results show that (1) during repeated contact of the three types of industrial waste gypsum with the leaching medium, the pH levels changed, and the changes in pH afected the leaching...
This paper is a review discussing Rwanda's mineral reserves. It aims to identify challenges and opportunities for investment and development of the country's mining sector. Data were collected from the literature review including existing published books, articles, mining reports, and online documents on Rwandan mineral reserves from the GoR and NISR. Results …
Cement-grade gypsum tolerates higher NaCl (0.5–0.6% maximum) and insolubles (6% has been used). Agricultural uses. Agricultural gypsum is being increasingly used to treat sodic soils, symptoms of which are waterlogging, increased runoff, poor water storage, surface crusting, and problems with cultivation and erosion.
The primary purpose of these papers is to promote the development and conservation of our mineral resources by disseminating technologic information on methods, practices, and results that may be applied to the engineering analysis and solution of mining problems. Gypsum mining in Iowa has been confined to two localities: One, in Webster …
Climate change isn't the only problem associated with coal mining, for example 1 . In Indonesia, the world's biggest coal exporter, ...
The mining industry does, however, produce enormous volumes of waste. The amount of mine waste produced is of the same order of magnitude as that of fundamental Earth-shaping geological processes, some several thousand million tonnes per year (Fyfe, 1981, Förstner, 1999).The chief waste stream is tailings, which are often stored in impoundments …
Gypsum is a naturally occurring mineral that has been used by humans for various purposes for thousands of years. It is a versatile mineral with a wide range of applications in construction, agriculture, industry, and even art. ... Notable examples include the Cave of the Crystals in Mexico's Naica Mine, which contains some of the world's ...
This alteration reduced the natural problems in industrial by-product gypsum (such loose crystalline structure, structural elasticity, and a large number of inside microspores in the solidified body). ... Industrial by-product gypsum was used as mine filling materials and road backfill materials for filling materials. (a) Mine filling materials ...
A total of 6.3 Mt of gypsum and anhydrite were produced by six companies from eight sites in the Province in 1987. Nova Scotia is the world's most productive gypsum mining area and yet little information was available, at the outset of this project, regarding the Province's gypsum and anhydrite resources. ...
In court documents, the state traced the area's mining history to the 1900s, noting a company that mined underground and on the surface before 1930.
In 1997 a dam atop a gypsum stack at a Mulberry Phosphates fertilizer plant broke during heavy rains, spilling 56 million gallons of acidic wastewater into the North Fork of the Alafia River. ... "Piney Point is one example of the problem, but it's not the only one. ... setting off a mining rush where Hardee, Hillsborough, Manatee, and Polk ...
This study includes natural hazards and environmental problems caused by gypsum on and near the soil, water, and structures.
Industrial by-product gypsum was mainly composed of CaSO 4 • 2H 2 O [12], which has reached a discharge of 212 million tons a year in China, but the comprehensive utilization rate is only 40% ...
Demand for gypsum is primarily linked to building activity and overall, worldwide consumption and production are steadily increasing in response to new commercial and residential developments. Traditionally gypsum has been produced by mining, both opencast …
An Image Problem. Gypsum has always had something of an image problem. Not being a gemstone or ranking in the top tier of collectibles, it lacks the glamour associated with certain other minerals. ... The US leads the world in production, annually mining 21 million tonnes of gypsum from 50 mines in 17 states. Gypsum ore, an impure form of ...
Flue gas desulfurization gypsum (FGDG) is a by-product generated in the combustion of coal. This solid residue has the potential to be applied to the soil and help to reduce acidity and provide nutrients to soils impacted by surface coal mining. Thus, the objective of this work was to evaluate nutrients and heavy metals in soil and plant tissue and the …
Most of the world's gypsum is produced by surface-mining operations. In 2022, only three underground gypsum mines were in operation in North America, one each in Indiana and Iowa in the United States and one in Ontario, Canada. Gypsum is quarried from near-surface deposits. Overburden consisting of glacial materials (till, sand, clay), shale ...
This study includes natural hazards and environmental problems caused by gypsum on and near the soil, water, and structures. These are karst-specific deformations (caves, fractures, cracks) naturally occurring in gypsum …
Gypsum mining, predominantly carried out for its use in the construction industry, has its own set of environmental challenges. Gypsum extraction through open-cast mining can lead to habitat fragmentation, biodiversity loss, and …
Industrial mining projects can play an important role in global sustainable development if associated health risks are minimised and opportunities maximised. While a broad body of evidence from quantitative studies exists that establishes the interlinkages between mining operations and effects on public health, little research has been conducted …
Fire-Resistant Gypsum Board: Enhanced fire-resistance properties for safer buildings. Acoustic Gypsum Panels: Designed to improve sound insulation in buildings. Things Not Known About Gypsum. Crystal Habits: Gypsum crystals can grow to enormous sizes, with some selenite crystals in Mexico's Naica Mine reaching lengths of over 11 meters.