US: Geometrica has appointed Alejandro Algara as its CEO. He will succeed company founder Francisco Castano in the role. Castano will continue to work for the company as chair.

Algara has worked for Geometrica since 2011, when he started as a Junior Engineer. He became a Technical Manager in 2020 and the company’s Vice President and Chief Commercial Officer in 2025. He is a graduate in civil engineering from the Technological Institute of Monterrey.

Texas-based Geometrica was established in 1992. It designs and builds domes and space frames for architectural, industrial and bulk storage markets.

US: CM Shredders has appointed Michael Hillstrand as General Manager.

Amongst other roles, Hillstrand previously worked Shred-Tech in Canada from 2021 to 2024. Before this he worked for Calco Plating & Recycling from 2024 to 2021 eventually become its president. Hillstrand is a graduate in business administration from the University of Missouri-Columbia.

Florida-based CM Shredders designs and manufactures equipment for the tyre recycling industry, with systems operating in installations across five continents and more than 28 countries.

Brazil: Lhoist has appointed Tiago Mudesto Gomes as Executive Plant Manager at its Arcos lime plant in Minas Gerais.

Gomes previously worked for cement-producer Votorantim from 2015 to 2026, becoming its Global Maintenance General Manager in 2024. Before this he worked as the plant manager at the Cuiabá, Sorocaba and Primavera cement plants. Earlier in his career he held maintenance manager roles with InterCement and as a technical sales manager for FLSmidth. Gomes holds an undergraduate degree in mechanical engineering from the Centro Universitário UNA and a master of business administration (MBA) qualification from the Insper Learning Institution.

UK: Material Evolution (Mevo) has appointed Phil Litchfield as its Technical Sales Manager.

Litchfield holds over 20 years of expertise in precast concrete products, having recently worked as Sustainability Manager at Brett Landscaping and Building Products. Before that he held the position of Site Technical Manager at Marshalls.

Material Evolution produces an 'ultra-low carbon' cement product called MevoCem. It commissioned its Mevo A1 Production Facility in Wrexham in 2024.