Zimplats embarked on a major expansion project in 2004 requiring various mining and civil infrastructure. Mariswe’s unique Integrated Construction Unit (ICU) contract methodology was selected due to its flexibility for fast track labour-intensive implementation with frequent changes in scope in a challenging socio-economic environment.
Civil infrastructure was provided for a staff village of 5 000 modular housing units and a management camp of 80 units, including surfaced access roads, bulk water storage and conveyance, sewage treatment and disposal, and storm water management.
Extensive use was made of mine waste rock for the labour-intensive construction of stone masonry roads, water reservoirs and lined open drains for storm water management.
Mine infrastructure included:
- Gabion retaining wall at the new crusher tip area;
- Bulk water supply to a decline shaft;
- Reinforced concrete works for a new conveyor;
- Boxcut for new decline shaft;
- Reinforced concrete roads to decline shaft portals; infrastructure for new mineral processing plant;
- Infrastructure for mine water storage, mine water conveyance and storm water management at three mining portals;
- Tailings and return water dams.