Displaying items by tag: Colorado

US: A team from the University of Colorado Boulder (UCB) has developed a carbon-neutral alternative cement from biogenic limestone. The limestone comes from farmed cocolitophores, which capture CO₂ as they grow.

The UCB scientists collaborated with colleagues from the University of Carolina at Wilmington and the National Renewable Energy Laboratory on the project. Their work has received US$3.2m in US Department of Energy funding.

This news story has been corrected to include the correct name of the University of Colorado Boulder

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.

US: Cemex has increased production of Portland limestone cement (PLC) at its Lyons plant in Colorado. PLC is expected to become the plant’s primary product by the summer of 2022. The blended cement has been produced at the site for over 15 years. However, Cemex says it is growing production to meet the company’s carbon reduction goals and meet increased demand for lower carbon materials.

Cemex USA has also increased PLC production at its plants in Brooksville, Florida, and Demopolis, Alabama. The start of PLC production or further increases is planned for other cement plants later in 2022.

US: Cemex USA has delivered grants via the Cemex Foundation to over 80 non-profit organisations so far in 2020 as part of its coronavirus relief efforts. The funds donated by Cemex USA employees have provided more than a quarter million meals to those facing food insecurity and overall have positively impacted more than 200,000 people in California, Nevada, Arizona, Colorado, Texas, Alabama, Tennessee, Pennsylvania, Georgia and Florida. The initiative also supplied more than 20,000 pieces of personal protective equipment (PPE) for medical staff and first responders.

“Covid-19 has created far-reaching impacts and unparalleled challenges, prompting thousands of families to request additional support for food and shelter while they continuously worry about the health and safety of themselves and their loved ones. At Cemex USA, we wanted to help our neighbours and communities during this unprecedented time,” said Cemex USA president Jaime Muguiro. “The help provided by non-profits right now is critical, and we are proud to be able to deliver significant support for their initiatives that are making a difference in our communities.”

Organisations that have benefited from the grants include: United Way of Central Alabama (UWCA) in Birmingham, Alabama; Feeding South Florida in Florida; Feed the Frontline Houston in Houston, Texas; Lyons Emergency Assistance Fund (LEAF) in Lyons, Colorado; House of Refuge in South Mesa, Arizona; and Heart of Los Angeles Youth (HOLA) in Los Angeles, California.

US: The Portland Cement Association (PCA) has announced the winners of the 2020 Safety Innovation Awards. The awards recognise ‘creative safety-enhancing projects in the cement industry’ across five categories.

Buzzi Unicem USA’s Joliet, Illinois cement terminal won the distribution award for its barge entry ladder, which reduced fall hazards associated with unloading cement from barges. Ash Grove Cement’s Durkee, Oregon cement plant won the general facility award for its burner pipes cart upgrade, which reduced safety hazards associated with moving cement kiln burner pipes. Further hazard reductions were made by Buzzi Unicem USA’s Chattanooga, Tennessee cement plant’s finish mill access platform and the Monarch Cement Company’s Humboldt, Kansas cement plant’s noise reduction upgrade, which jointly won the milling/grinding award. The pyroprocessing award went to GCC of America’s Pueblo, Colorado plant for its semi-automated clinker feeding system, while the quarry award went to Ash Grove Cement’s Louisville, Nebraska plant for its dump box hardened material extraction tool.

PCA president and chief executive officer (CEO) Michael Ireland said, “Our industry prioritises the safety of its employees above all else. We are proud of our members’ efforts to pursue excellence in safety innovation for their company and their colleagues.”

US: A US federal court has upheld the ruling of a Colorado district court that Mexico-based Grupo Cementos de Chihuahua (GCC) must pay around US$36m compensation to Compañía de Inversiones Mercantiles (CIMSA) for failing to grant it a right of preference prior to GCC’s sale of its 47% stake in Sociedad Boliviana de Cemento (SOBOCE).

Peru-based Consorcio Cementero del Sur obtained 100% ownership of Bolivia-based SOBOCE following its acquisition of GCC’s stake in 2011.

US: LafargeHolcim says that Department of Energy institution National Energy Technology Laboratory has awarded US$1.5m of federal funding to the company’s CO₂MENT Colorado project. The project aims to capture 2.0Mt/yr of carbon dioxide (CO₂) from the company’s 1.9Mt/yr Portland cement plant in Florence, Colorado for sequestration underground by Occidental.

The group said, “With the successful completion of the initial scoping study in June 2020 and confirmation of Department Of Energy funding, the partnership has committed to the next project phase.”

US: The Portland Cement Association (PCA) has announced the winners of its Chairman’s Safety Performance Award for outstanding safety performance in Portland cement production in the US.

The winners were: Cemex USA’s Clinchfield, Georgia and Victorville, California plants; Lehigh Hanson’s Cupertino, California and Tehachapi, California plants; Titan America’s Medley, Florida and Troutville, Virginia plants; LafargeHolcim’s Morgan, Utah and Theodore, Alabama plants; Buzzi Unicem’s Chattanooga, Tennessee plant; GCC of America’s Pueblo, Colorado plant; and Argos USA’s Atlanta, Georgia grinding plant.

PCA chair Tom Beck said, “We’re proud to highlight these top safety performers. Our industry is constantly focused on doing everything possible to assure our employees go home in the same condition as they arrived.”

US: Oldcastle APG, a subsidiary of CRH, has acquired dry mix manufacturer US MIX. The purchase adds to APG's dry mix manufacturing footprint and expands its network of facilities to the Denver, Colorado market. In addition, the acquisition provides APG with materials science expertise and adds another brand, US SPEC, to its existing dry mix product portfolio of Sakrete and Amerimix. No value for the acquisition has been disclosed.

US MIX primarily operates out of a manufacturing facility in Denver, with a secondary specialty bagging location in Fontana, California. Founded in 1968, US MIX has been privately owned by the Peterson family for over 50 years. Its products include bagged concretes, mortars and specialty cement mixes, in addition to liquid repair products.

US MIX currently operates as a Sakrete and Amerimix licensee and offers a variety of specialty products under the well-known US SPEC brand. US SPEC products are professionally engineered concrete and masonry repair products used in a variety of applications, formulated and tested in laboratory conditions under ASTM testing methods and specifications.

US: People living near the Cemex Lyons cement plant in Colorado have complained about dust emissions. The Save Our St. Vrain Valley group has filed a report with Boulder County Public Health about dust clouds rising from site, according to the Associated Press. The local authorities say that the clouds don't appear to violate any existing regulations but Cemex officials have promised to look into the issue. The cement producer has also said that it has ways to mitigate dust emissions and it welcomes hearing from people so it can address any concerns.