Displaying items by tag: Mining

US: Eco Material Technologies, a producer of sustainable cementitious materials, has opened its Kirkland Pozzolan Mine in Yavapai County, Arizona. The 40-hectare site is one of the largest natural pozzolan mines in the US.
"We are excited for the opening of the Kirkland Pozzolan Mine, which will benefit not only Yavapai County but all of Arizona as well as the surrounding region," said Grant Quasha, CEO of Eco Material Technologies. "Without the support of elected officials, including Governor Doug Ducey, Senator Mark Kelly, State Senator Karen Fann and State Representative Quang Nguyen, we would not be celebrating this milestone achievement."

The event also recognised the hard work and dedication of the plant's employees, as well as Eco Material's contributions to the area including bringing wireless internet service to the surrounding community, planting new trees and generating significant tax revenue for the state.

India: The Tamil Nadu Federation of Panchayat Presidents, an overarching organisation for local government leaders, has begun a protest against unlawful cement plant practices in the state. The New Indian Express newspaper has reported that the federation’s president Sellam Kadamban said that limestone mines and trucks are operating illegally, creating pollution and traffic collisions.

Canada: Progressive Planet Solutions has successfully produced a new supplementary cementitious material (SCM) called PozDE from diatomaceous earth. The company says that it developed PozDE using calcium bentonite-containing diatomaceous earth from the Red Lake mine in Kamloops, British Colombia. The SCM’s seven-day and 28-day strength activity index (SAI) values are 101% and 120% those of ordinary Portland cement (OPC) respectively, while its water demand is lower at 98%.

Chief operating officer Ian Grant said “It is uncommon to see SCMs exceed the 7-day strength of the control Portland, so we are excited to see better strength while indicating lower water demand."

US: Cemex USA has applied for a permit to continue mining at Dowe Flats to support operations at its integrated Lyons cement plant in Colorado. It has asked the Boulder County Community Planning and Permitting department to allow it continue mining for 15 years until 2037, according to the Daily Camera newspaper. It then says it will close the cement plant. Its existing mining permit will end later in 2022.

China: Xinjiang Tianshan Cement, a subsidiary of Chizhou CNBM New Materials, has acquired mining rights for the Hengshan mining area and peripheral mines in Chizhou City’s Guichi District in Anhui province for US$376m. Reuters has reported that the company plans to make a total investment of US$1.38bn in establishing its mining operations there. The mines have limestone reserves of 513Mt and will be operational until 2043.

Tanzania: Tanga Cement’s full-year results show a 9% year-on-year rise in sales to US$99.5m in 2021 from US$91.7m in 2020. Its net profit was US$1.5m, as against a US$903,000 loss in 2020.

The Kenyan Wall Street newspaper has reported that the company replaced a kiln shell at its Tanga cement plant and outsourced mining operations at its quarry during the year.

India: The National Green Tribunal (NGT) has quashed UltraTech Cement’s environmental clearances for its Babarkot and Jafrabad limestone mines in Gujarat’s Amreli District, the Indian Express newspaper reports. The tribunal said that, as a cluster spanning over 50ha, extensions to the mines were subject to Ministry of Environment, Forestry and Climate Change (MEFCC) approval. This was not granted at the time of the latest expansions’ approval by the State Environment Impact Assessment Authority in 2018.

Mexico: The Mexican Chamber of the Construction Industry (CMIC) has voiced cement price concerns following the introduction of a new environmental tax on mining activity in the state of Nuevo León. Cemex operates a quarry in the state, and has resultingly experienced a rise in the cost of its cement production. The El Norte newspaper has reported that the producer’s Monterrey, Nuevo León, cement plant supplies cement across northeastern Mexico.

CMIC also lobbied the government to begin awarding public works contracts to private investors instead of the Mexican armed forces. It argued that this would help to generate jobs.

Nepal: Residents of the Arghakhanchi, Palpa, Pyuthan and Rolpa hill districts of Lumbini Province have reported that increased contamination with residues from limestone extraction has made many traditional water sources unreliable. the Kathmandu Post newspaper has reported that Alpha Cement, BS Cement, Kanchan Quarries, Hongshi Shivam Cement, Palpa Cement, Sarbottam Cement, Satyawati Cement and Siddhartha Minerals operate a total of 10 mines in the affected districts. Springs reportedly took 10 years to recover following the closure of Arghakhanchi Cement’s Narpani quarry in 2012.

US: United States Lime & Minerals has announced its acquisition of Mill Creek Dolomite from InterRock Minerals. The value of the deal was US$6.4m.