The transaction has a price tag of A$7.6 million (US$5.1 million) in cash and shares.
Wilson, part of the Australian underground coal community for 25 years, is the Australian and New Zealand exclusive distributor of Weber Mining products, including the Rocsil, Fenoflex and Marithan ranges. It may be known best for its strata consolidation products, polyurethane chemicals and ventilation services.
"This business pioneered the introduction of phenolic cavity fill and injection products, which has greatly improved the safety and productivity of longwalls in Australia," Mastermyne CEO Tony Caruso said.
"WMS and Mastermyne have a long history of working together to provide chemical injection and installation support to the Australian underground coal sector, and the acquisition of WMS fits well with our growth strategy of providing niche, value adding underground services to our existing clients."
The acquisition is still subject to some customary conditions, but is expected to close late this month.