Opportunities for Sustainable Mining by Beneficial Pit Lake End Uses

Opportunities for Sustainable Mining by Beneficial Pit Lake End Uses

Clint McCullough (MiWER), Mark Lund (MiWER)     Can Australian pit lakes be used for sustainable enduses for mining companies, communities or the environment?   Being a finite abstraction, “sustainable mining” is something of an oxymoron for what is inherently unsustainable activity. Nevertheless, in an era of increasing recognition of environmental and social damage through an ever-growing scale of mining coupled with increasing corporate social conscience for these activities, the mining industry usually works to reduce operational risk and retain its “social licence to mine” the community resource through a variety of strategies. Figure: Conceptual beneficial end uses for pit lakes…

Geochemical Modelling of Pit Lake Water Chemistry to Support Management Decisions

Geochemical Modelling of Pit Lake Water Chemistry to Support Management Decisions

Mike Mueller (Hydrocomputing, Germany), Katja Eulitz (Hydrocomputing, Germany), Clint McCullough (MiWER), Mark Lund (MiWER)     How does pit lake water quality and depth change under different management scenarios? Stage 1. Selection of appropriate model This model will maximise the use of the currently available data for model creation and validation. The current preference is not to focus on a single pit lake and model in detail but develop a simpler model that can be easily applied to cohorts of Collie pit lakes identified by the inventory collection and conceptual modelling. This general model would be less detailed but more suited to…

Development of Pit Lake Beneficial End Uses

Development of Pit Lake Beneficial End Uses

Clint McCullough (MiWER), Douglas Hunt (Curtin University), Louis Evans (Curtin University) What planning and regulatory involvement if required to develop pit lakes into beneficial end uses? Social licence to mine is encouraging a much greater emphasis on sustainability and contribution to the local community of a post-mining landscape than ever before. Development of a pit lake resource into a beneficial end use depends upon input from the mining company involved, the local community and also relevant regulatory agencies. Planning must ideally occur before the first hole is dug, and from then on it should be regularly updated as economic and social…

Conceptual Modelling of Pit Lake Processes and Ecological Risk

Conceptual Modelling of Pit Lake Processes and Ecological Risk

Clint McCullough (MiWER), Mark Lund (MiWER) Conceptual modelling to better understand ecological risks posed by pit lakes To ensure greatest scientific robustness of conceptual models we held a site visit and workshop in Collie with an expert panel of scientific researchers and managers from universities and State regulatory staff to best understand how these processes are likely working in different pit lakes. This workshop identified conceptual model needs e.g., a carbon cycling model and an acidity budget model. The intent is to then present the conceptual models as diagrammatic representations highlighting the nature of relationships between parameters and processes. These models will also…