Vysarn (formerly MHM Metals Limited) engages in the aluminium waste recycling business in Australia. The company recycles and processes salt slag and black dross into aluminium, a salt and potash blend, and aluminium oxide. It was also involved in the exploration of silica metals.
The company was formerly known as Macquarie Harbour Mining Limited and changed its name to MHM Metals Limited in 2010. The company became Vysarn in December 2017.
In February 2022, Vysarn launched a wholly-owned subsidiary Pentium Water to provide water management consulting services in hydrogeology, hydrology and environmental planning to the resource, urban development, utility, government and agricultural sectors.