DENVER, COLORADO — (Marketwire) — 03/12/12 — SANDSPRING RESOURCES LTD. (TSX VENTURE: SSP) ("Sandspring" or the "Company") is pleased to announce the publication of an updated NI 43-101 technical report titled "TECHNICAL REPORT, UPDATED RESOURCE ESTIMATE AND PRELIMINARY ECONOMIC ASSESSMENT OF THE TOROPARU GOLD-COPPER DEPOSIT, UPPER PURUNI RIVER AREA, GUYANA" (NI 43-101 & 43-101F1, P&E Report No. 234)".This report supports the latest Mineral Resource
