Proposed code: SRM, Issue price: $0.20, Principal activities: gold and copper exploration, Corporate: Ian Middlemas (non-executive chairman), David Cruse (executive director), Maximo Sara (technical director), Sinton Spence (non-executive director), Clint McGhie (company secretary), www.sierramining.com.au , (08) 9322 6322, The company aims to raise $4.5 million, Broker to the offer: Argonaut Securities Pty Ltd