as export purposes. The centre point of this operation is Khyber-Pakhtoonkhwa and most recently Gilgit-Baltistan. These include actinolite, hessonite, rodingite, agate, idocrase, rutile, aquamarine, jadeite, ruby, amazonite, kunzite, serpentine, azurite, kyanite, spessartine (garnet), beryl, morganite, spinel, emerald, moonstone, topaz, epidote, pargasite, tourmaline, garnet (alamandine), peridot, turquoise, grossular, quartz (citrine and other varieties) and vesuvianite. The export earned from these gems is more than 200 Million dollars. Accidents in the mining industry Mining in Pakistan is a dangerous job, especially coal mining, as safety procedures are often neglected and accidents are quite common. There is air pollution with no modern safety equipment such as breathing equipment or ventilation. Nearly all miners have lung problems and many suffer from carbon monoxide poisoning. But the main causes of death and injury are falls from cliffs, being buried when mines collapse and being hit by falling rocks. On 27 January 2019, two miners died after being hit by a trolley inside a coal mine in Balochistan's coal-rich Dukki District. On 21 March 2011 at least 45 miners died due to an explosion in a coal mine in Surran range, some east of the provincial capital, Quetta. On 14 February 2011, 2 Chinese engineers died in a chromite mine collapse in Qila Saifullah. On 27 May 2004, 15 miners died after a gas explosion at a coal mine in Balochistan. See also Coal mining in Pakistan Economy of Pakistan List of minerals found in Pakistan References External links "2009 Minerals Yearbook: Pakistan" https://web.archive.org/web/20100628035154/http://www.gems.com.pk/Gemstones_History.asp