Displaying items by tag: Quarry

Croatia: Volunteers from Cemex collaborated with the Agricultural and Veterans’ Cooperative Lintar and local school pupils to harvest 6.5t of olives from the site of its rehabilitated Split quarry in Split-Dalmatia. The company says that the winter crop produced 900l of olive oil.

Cemex’s Europe, Middle East and Africa corporate affairs, sustainability and environmental resources manangement vice president Andrew Spencer said “We recognise that our industry has consequences for the environment, but Cemex is working hard to actively counteract climate change and this drive is present through all aspects of our business. In our cement and aggregate quarrying operations across Europe, we restore and recultivate our sites to provide optimal conditions that are managed well to deliver for biodiversity.” He added “Our vision is of a successful, sustainable Cemex that makes a positive contribution to people and the environment.”

We start 2022 with the news that Cemex is selling up to Cementos Progreso in Costa Rica and El Salvador. On 20 December 2021 Cemex announced that it was selling one integrated cement plant, one grinding plant, seven ready-mix concrete plants, one aggregate quarry and one terminal in Costa Rica and one terminal in El Salvador. The sale is valued at around US$335m with an expected completion date in the first half of 2022 subject to regulatory approval.

This sale is noteworthy because it concerns Mexico-based Cemex selling off assets in its ‘back yard’ of Central America. Once the sale completes it will retain operations in Panama, Nicaragua, Guatemala and Colombia under its Cemex LatAm subsidiary. It will also continue to operate in the Caribbean in the Dominican Republic, Jamaica and Puerto Rico. Previous divestments by Cemex over the last five years or so have tended to focus on piecemeal (or bolt-off) divestments in the US and Europe. This latest sale could be viewed in a similar way if Central America and the Caribbean are seen as a region rather than individual countries. For its part Cemex describes the divestment as part of its ‘Operation Resilience’ plan to optimise its global portfolio.

Why it chose to sell up in Costa Rica is curious given that Cemex LatAm’s cement sales volumes for the region were reported as ‘flat’ in 2019 with the exception of Colombia and El Salvador. 2020 was then a shock, like almost everywhere else, as coronavirus caused disruption reducing sales volumes. 2021 saw recovery in all of Cemex LatAm’s national markets over the first nine months. Notably, both Cemex’s revenue and operational earnings in Costa Rica grew when comparing the first nine months of 2019, before the pandemic, to the same period in 2021, unlike Colombia and Panama. For the third quarter of 2021 Cemex said that growing cement sales volumes in Costa Rica had been driven by infrastructure and housing sectors. It also added that “Our cement footprint in the country is also a very relevant component of our regional trading network. We continued exporting during the quarter, mainly to our operations in Nicaragua.” In may be coincidence but it was interesting timing to add a comment like that.

From Cementos Progreso’s perspective the new assets in Costa Rica and El Salvador are part of an ongoing expansion phase outside of its home base. At home in Guatemala the company operates three integrated plants. The third, the San Gabriel plant, started up in 2019. In the same year the company purchased Cemento Interoceanico and its grinding plant in Panama. Then in July 2021 the group commissioned its new Belmopan grinding plant in Belize as part of its Cementos Rocafuerte subsidiary. The new proposed acquisitions in Costa Rica and El Salvador start to fill in the gaps in Cementos Progreso’s network between Guatemala and Panama. The price seems on the high side for a 0.9Mt/yr integrated plant and a 0.9Mt/yr grinding unit. Yet the associated quarry, concrete plants, terminals and, crucially, the location may have made it one well worth paying. For comparison Peru-based Unacem agreed to purchase a grinding plant from CBB in Chile this week for around US$30m. Back in 2013 Lafarge sold assets in Honduras, including an integrated plant and a grinding unit, to Cementos Argos for Euro232m.

Both parties may do well out of this transaction. Cemex continues to show that it is fully prepared to sell assets anywhere as it sharpens up its operations. Cementos Progreso meanwhile is turning itself into a regional player to watch.

India: ACC has been awarded a five star rating for sustainable mining by the Ministry of Mines. Pralhad Joshiand, the Union Minister of Coal, Mines and Parliamentary Affairs of India, and Raosaheb Patil Danve, the Honourable Minister of State for Ministry of Mines, Coal and Railways, presented ACC with the award at the fifth National Conclave on Mines and Minerals held in Delhi.

The award is a recognition of the company’s efforts towards sustainable mining at the Govari Limestone Mine, the Wadi Limestone Mine, the Gagal Limestone Mine, the Jamul Limestone Mines and the Kymore Limestone Mines from amongst 1029 mines in all over India. The mines were rated from one star to five star on the criteria including: mining methodology; resettlement and rehabilitation issues; community engagement; use of green energy sources, digitisation; and data reporting.

Rajat Prusty, the Chief Manufacturing Officer of ACC, said, “Sustainability is deeply embedded in ACC’s business model. It’s a proud moment for the company to be recognised for its efforts in sustainable mining.”

UK: A court has fined Breedon Group Euro350,000 for endangering workers at one of its quarries. Environmental Data Services News has reported that a blast caused a flyrock projection event as workers set off explosives at the quarry.

India: The 5th National Conclave on Mines and Minerals has granted its Five Star mine management award to two Ramco Cements limestone mines. These are the Melavenkateswarapuram mine and Pudupalayam and Periyangalur mine in Tamil Nadu. This is the fourth successive year that the company has won a Five Star award for its mining operations in the state.

Sweden: The government has extended Cementa’s permit to continue mining limestone at the quarries supporting its Slite cement plant for just over one year until the end of December 2022. The cement producer said that it would restart its mining activity immediately. However, it warned that the decision could still be appealed and work stopped whilst the case was pending. The subsidiary of Germany-based HeidelbergCement also refused to rule out shortages of cement in the future due to general uncertainty with the situation. Cementa has now started applying for a three to four year mining permit at the site.

Austria: W&P Zement has installed a Euro2.5m new raw materials processing plant at its Peggau quarry in Styria. The plant will introduce modern washing and sieving processes to operations at the quarry, with an additional sludge buffer for the processing of clayey material. Project manager and mining manager Jürgen Kolp said that the plant will improve the sustainability of the company’s raw materials extraction operations by increasing the limestone yield from excavated raw material.

Volvo Autonomous Solutions and Holcim Switzerland announced this week that they are testing and developing the use of autonomous electric haulers in a limestone quarry. It’s a two-part project, as being able to run electric dump trucks will help Holcim to meet its sustainability goals by switching to renewable energy supplies. Automating the control of the trucks then lets Holcim work towards its digitisation targets as part of its ‘Plants of Tomorrow’ initiative. Holcim Switzerland has also been running a drone programme at the plant (see GCW520) and has been using a few electric concrete mixer trucks since early 2021.

The use of autonomous haulage systems (AHS) in quarries by the cement industry seems to mark the start of something new. As far as Global Cement Weekly can tell, the Volvo Autonomous Solutions - Holcim Switzerland project is the first one in the cement sector that has been announced publicly. Most of the examples of AHS to date have been for heavy mining applications such as iron ore, copper, oil sands and coal. Automation in limestone and aggregate extraction has been slower. One recent example in the aggregate sector was announced in late 2020 when Norway-based technology company Steer said it had signed a contract with Romarheim to supply three autonomous dump trucks for use in a stone quarry. Previously Steer has used its vehicles to clear unexploded ordinance for the Norwegian army.

AHS have been around commercially since the mid-2000s when Komatsu tested and then deployed one at a copper mine run by Codelco in Chile. By September 2021 Komatsu said it had commissioned over 400 trucks with its autonomous system and that these had hauled over 4Bnt of materials. For its part Caterpillar says it started its first automated vehicle research program in 1985 and was even testing a pair of Cat 773 dump trucks in the 1990s. However, it then took a pause before resuming after 2000 and starting its commercial projects in the 2010s. In April 2020 it hit 2Bnt of hauled materials by AHS using its MineStar Command product. Hitachi, Liebherr and Belaz have also been working on their own AHS products in conjunction with third party technology providers and these were developed later in the 2010s. Most of these products are complimentary control systems that have been added to existing models or can be added to new ones. Autonomous vehicle company ASI is the other big name in the field with its Mobius product. Unlike the other systems, this is purely a retrofit product. ASI does not make its own vehicles. Komatsu and Caterpillar have also developed retrofit kits for their systems.

Most of the products above look mostly like normal trucks with the addition of extra kit. Volvo and Scania have also been working on AHS but their products have been taking it further by removing the cab entirely. Scania launched its AXL product in September 2019. Volvo launched its Volvo Autonomous Solutions subsidiary in 2020 and its Tara system electric dump truck the same year. Volvo had previously planned to run a pilot for its Tara truck with Harsco Environmental carrying slag at the Ovako Steelworks in Hofors, Sweden. Unfortunately the pilot was disrupted by the start of the coronavirus pandemic shortly after it started.

It’s early days yet with the use of autonomous vehicles in the quarries of the cement and aggregates sectors. Obvious advantages are additional operational hours, better worker safety and reduced costs. As ever with automation, cutting out human jobs would be one disadvantage for the current workers at least. There is also the possibility that an experienced human driver using efficiency software tools might be better than a fully AHS. A challenge in the field is developing open standards or methods to allow autonomous machines to communicate or work with both products by the same manufacturer and its rivals, as well as with conventional human-driven ones. Another challenge is for the mining and quarrying industry to determine how flexible it wants its heavy vehicles to be. One thought to end with this that an autonomous vehicle with a cab and a steering wheel can still be driven by a human. The cab-less vehicles being tested by Volvo and Scania would be rather less useful if they get into a situation where the software can’t cope. Lots to consider.

If readers are aware of other examples AHS in the cement industry, please let us know at This email address is being protected from spambots. You need JavaScript enabled to view it.

Chile: Cementos Polpaico has submitted an environmental impact study for a US$60m upgrade of its Cerro Blanco cement plant in Tiltil, near Santiago. Business News America has reported that the proposed work consists of the installation of a new precalciner, an expansion to its four limestone quarries and the establishment of a new filtered tailings deposit and 3000t cement silo.

The producer hopes to launch the project in January 2023 in order to commission the upgraded plant before 2026.

Switzerland: Holcim Schweiz has partnered with Sweden-based Volvo Autonomous Solutions to test and develop automated electric dumpsters at its Gabenchopf quarry in the Siggenthal. The companies aim to develop a safe, efficient and sustainable dumpster for use in the cement industry.

CEO Simon Kronenberg said “We are very excited to be working with Volvo on this project. For us, this project means a further step towards realising our sustainability goals: in order to make a contribution to a sustainably built future, we continuously invest in measures to reduce our ecological footprint and look for solutions that are both innovative and sustainable."