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

SSH Group (ASX:SSH)

SSH Group agreed to acquire 100% of the shares in Total Alliance for AU$60,000, subject to due diligence and mutual satisfaction of key terms outlined in the non-binding term sheet disclosed on March 28.

Critical Resources (ASX:CRR)

Critical Resources filed two assessable prospecting operation applications to start its maiden drilling campaign across the Mayview Homestead and the Amoco Grid prospects within the Halls Peak project in New South Wales.

Tennant Minerals (ASX:TMS)

Tennant Minerals identified a "significant" copper-in-ironstone anomaly below surface at the Bluebird East target, part of the Barkly project in the Northern Territory, extending over a strike length of at least 250 meters.

Axel REE (ASX:AXL)

Axel REE is targeting a maiden mineral resource estimate for the Caladao project in Brazil in the first half of the year, with SRK Consulting conducting the estimation over 60 square kilometers of mineralized area.

Errawarra Resources (ASX:ERW)

Errawarra Resources awarded its first drilling contract at the Elizabeth Hill project in Western Australia to West Core Drilling.