Macmahon (ASX:MAH) secured a two-year contract extension with Vault Minerals (ASX:VAU) for underground mining services at the Daisy Milano gold mine in Western Australia, according to a Monday filing with the Australian bourse.

The contract extension to October 2026 is expected to add AU$90 million in revenue to the mining services company's orderbook, the filing said.

Macmahon shares fell almost 2% in morning trade Monday.

Price (AUD): $0.34, Change: $-0.01, Percent Change: -1.45%