Click here for the latest updates on the Sterlite protest.Police firing on people opposing Sterlite Copper Ltd.’s plant in Tuticorin, Tamil Nadu left 12 dead. The protests stem from environmental concerns over the smelter of billionaire Anil Agarwal-led Vedanta Ltd’s subsidiary. But it’s not the first time that a Vedanta project has triggered environment worries. Here’s a snapshot:Tamil Nadu Copper SmelterPeople opposing the plant at Tuticorin have been protesting for more than 100 days, saying it causes groundwater and air pollution. Vedanta informed stock exchanges in April that the Tamil Nadu Pollution Control Board had refused to renew permission to operate the copper plant. The board later cited dumping of slag or waste in Uppar river, not submitting reports of groundwater analysis, generating hazardous waste and not studying possible arsenic content, The News Minute reported.Sterlite Copper also plans to expand capacity. The Madurai bench of the Madras High Court on Wednesday, 23 May, stayed construction of a new smelter in the same district, news agency ANI reported.P Ramnath, the company’s chief executive officer, told BloombergQuint in an interview that environmental concerns have been dealt with by the Supreme Court and the National Green Tribunal. “We have spent over Rs 500 crore for environmental mitigation in our facility.”Mining In Odisha’s Niyamgiri HillsVedanta built an aluminium refinery for Rs 50,000 crore at Lanjigarh, Odisha, which has been operational since 2007. The company wanted to source bauxite from the neighbouring Niyamgiri hills, home to about 8,000 tribal people.In 2010, the Ministry of Environmental and Forest turned down its mining proposal citing possible impact on environment, according to The Economic Times. The company challenged the move but the Supreme Court in 2013 rejected the appeal to revoke the ban, saying only the gram sabhas (village councils) could permit so.Vedanta, along with state-run Orissa Mining Corporation Ltd., moved the Supreme Court to hold the second round of gram sabha hearings, Business Standard reported. The request was turned down in 2016.Power Plant In PunjabVedanta’s 1,980-megawatt thermal power plant Talwandi Sabo, Punjab became fully operational in 2016. The Punjab Pollution Control Board imposed a fine of Rs 5 lakh on it for flouting environmental norms, according to a report in Hindustan Times. The unit was found to be using 34 percent more ash to generate power, causing fly ash pollution.In April 2017, a fire broke out in its coal handling unit damaging the conveyor belt. Vedanta had to shut down operations after the incident, The Times of India had reported.Goa MiningIn 2012, the Goa State Pollution Control Board had asked Vedanta, earlier Sesa Goa Ltd., to stop mining at its coke unit at Navelim in Bicholim taluka, near Panjim, Goa, according to a report in The Economic Times.Local villagers staged a protest claiming that the mine had polluted water resources and soot settled on their homes and food, the Business Line reported. The pollution control board said the company didn’t monitor air quality and needed to address it immediately. The plant used to generate 280,000 tonnes of metallurgical coke a year.Zambia Copper Plant SpillageThe Supreme Court of Zambia in 2015 upheld a high court ruling that Vedanta’s Konkola Copper Mines in the southern African nation caused pollution. A spillage in 2006 at the leach plant – for recovering metal from raw materials – resulted in effluents leaking into the Mushishima stream in Chingola region of Zambia.Vedanta said it has spent over $700 million towards improving the environmental performance of its operations, the Scroll had reported.In October last year, Zambian villagers won right to sue Vedanta, also listed in London, in English courts, according to a Reuters report.(This story was first published on BloombergQuint) We'll get through this! Meanwhile, here's all you need to know about the Coronavirus outbreak to keep yourself safe, informed, and updated. The Quint is now available on Telegram & WhatsApp too, Click here to join.