Construction & Maintenance

Calibre has two specialist construction and maintenance divisions - G&S Engineering and Diona 


Diona is a multi-utility infrastructure civil engineering company that specialises in the design and construction of cable laying installations, water, sewer and gas pipelines, as well as drainage and concrete construction.

G&S Engineering

G&S Engineering is a leading provider of operations, maintenance and asset management services to the resources, energy and infrastructure sectors.