Investors are likely to keep an eye on the following small-cap stocks listed on the Australian Securities Exchange.

DevEx Resources (ASX:DEV)

DevEx Resources will conduct a gravity survey this month to map the position of prospective faults and identify drill locations beneath the radon track etch anomalies found at the Big Radon and KP prospects in the Northern Territory. Preparations are also underway for maiden exploration programs at the Sandfire and Spitfire prospects.

Sarama Resources (ASX:SRR)

Sarama Resources closed the first tranche of its AU$2.7 million equity placement, raising proceeds of AU$2.6 million and issuing 86.7 million CHESS depositary interests at AU$0.03 apiece.

Hammer Metals (ASX:HMX)

Hammer Metals said its Bullrush joint venture with Sumitomo Metal Mining Oceania completed a 2,262-meter drill program testing iron oxide-copper-gold targets in Queensland.

PPK Group (ASX:PPK)

PPK Group said two of its subsidiaries, White Graphene and BNNT Technology, merged into a single nanomaterials business.

Southern Palladium (ASX:SPD)

Southern Palladium said an optimized pre-feasibility study for its 70%-owned Bengwenyama platinum group metals project in South Africa resulted in a new staged development approach with lower capital expenditure estimates.