A guide to leading practice sustainable development in mining

Dry stacking bauxite residue is now fully operational at all three of Alcoa’s
Western Australian refineries. A number of operational techniques have
been developed to optimise the slurry distribution and drying processes,
and these have now become standard practices. The advantages of reduced
environmental risks and lower overall storage costs are now being realised.
Figure 4.18 - Using a D6 Swamp Dozer to enhance the drying rate.
Water Management
The Business Case for Water Management
There are clear economic, environmental and social reasons to achieve it. Impacts
of sub-standard water management may not only be felt at a local level but may
escalate rapidly to become national and international issues, consuming large
amounts of resources. Too often water management is reactive and, because water
is intimately linked to climate variability, there is a risk that management priorities
become closely tied to current conditions; that is, excessive attention in times of
scarcity or excess and none otherwise. There are financial consequences of poor
operational water management. Running out of water can cost money in lost
production and high water prices. If water is poorly managed, product quality can be
compromised. Both these risks can result in loss of market share. Poor management
of excess water can result in fines, loss of reputation and difficulties with
environmental approvals. These risks can also cause issues with local communities
and other water users, which may be very expensive to remedy in the long term.
Lack of attention to the environmental and social services from water can erode the
social licence to operate.
120 LEADING PRACTICE SUSTAINABLE DEVELOPMENT PROGRAM FOR THE MINING INDUSTRY