Macmahon (ASX:MAH) secured a two-year underground mining services contract at the Deflector underground mine in Western Australia, according to a Tuesday filing with the Australian bourse.

The contract, which will start on May 1, is expected to add around AU$105 million to the company's secured orderbook, the filing said.

Additionally, Genesis Minerals (ASX:GMD) confirmed the company as the mining contractor for the Gwalia and Ulysses projects in Western Australia, expected to add AU$67 million to its secured orderbook, per the filing.