Clean Mining for Cyanide free Gold - Clean Earth Technologies


Clean Mining, a part of the Clean Earth Technologies group, is working to transform gold production worldwide with a new mineral processing technology that eliminates cyanide and mercury in the gold recovery process.

Award-winning. Non-toxic. Environmentally and financially sustainable.

This revolutionary gold recovery agent offers genuinely transformational change for the industry, setting a new ‘gold standard’ for miners around the world. At long last, cyanide and mercury can be a thing of the past. This is the mineral processing technology of the future.

Developed for more than a decade by CSIRO, Australia’s national science agency, this solution replaces toxic cyanide and mercury with a non-toxic gold recovery agent, benefiting both human health and the health of the environment.

Mining Magazine award winner
Clean Mining logo


Clean Mining has established a Clean Gold™ trademark to certify all gold produced via Clean Mining technology and where other ‘clean’ concepts have been demonstrated.

The ‘leaf’ logo appears on bullion and consumer jewellery and provides gold producers, manufacturers, jewellers and consumers with the knowledge that their gold choice is contributing to a cleaner planet and healthier communities.

Clean gold certified


Join the future of gold mining with Clean Mining, as your complete technology and plant partner:

  • For artisanal and small-scale gold mining (ASGM) projects that use mercury to recover gold, we offer affordable, scalable processing options.
  • For mid-scale mining operations, a fixed or mobile plant is available, processing upwards of 10 tonnes of material per hour. Our mobile plant, which can easily be deployed and relocated within weeks rather than years, can be configured to process up to 200 tonnes of material per hour.
  • For large-scale operations, fully scalable fixed plant options are available to fit a range of needs and operations.


Consultancy and Evaluation


Clean Mining’s patented process starts by understanding that each environment, mine, and ore sample will have unique characteristics.

Our turnkey solution begins with service and support, such as the ore testing and metallurgy you need in order to evaluate your environment and available assets. After that, we will determine and help carry out your optimal approach for gold extraction and yield optimisation. The end goal is to produce a cleaner, more sustainable use of your resources and to lessen the environmental impact they have.

Dirty Gold process
The Clean Gold Process


Clean Mining possesses demonstrable capabilities, tested in the field and at scale, for removing cyanide as the primary means of leaching gold in medium to large-scale mining operations.* Recently, the same solution for removing cyanide has been proven to fully replace mercury use in the artisanal and small-scale mining sector.

This alternative leaching solution is unique in its versatility and scalability—capable of being applied to a wide range of gold-bearing ores encountered by different operators. Non-toxic, non-flammable and water soluble, the gold recovery agent’s success rate in leaching gold from certain ores—e.g. carbonaceous—is 50% more compared to cyanide.

*DOWNLOAD our Gold Validation Document here >

Plant and Equipment


Clean Mining’s turnkey solution includes a range of plant and equipment options, from leaching tanks with combined front-end crushing and grinding mills, to back-end recovery and de-watering circuits.

The modular, scalable approach means the solution can be either a fixed production site or mobile. The mobile solution, currently under development, optimises set up, disassemble and shipping, and can support the transportation of products up to 200 tonnes-per-hour.

Future Development


Following the launch of the solution in mid-2019, Clean Mining has been inundated with interest from across the world.

As market adoption grows, the ability for miners to access Clean Mining technology will expand, as will retailer and consumer access to Clean Gold™.

With certification, branding and provenance already built into Clean Gold™, gold producers, manufacturers and jewellers will readily enjoy the transparency, economic incentives, sustainability credentials and prestige that come with being part of a Clean Solution.