The union representing some 12 thousand Twin Cities nurses is offering to resume talks next week with 14 hospitals and is pledging not to give a strike notice as long as talks are productive. The union is set to vote Monday on whether to authorize a second strike only this time it would be open ended. Hospitals agreed earlier this week to resume talks but only on the condition that the nurses agreed not to strike before July 31st. Hospitals, in turn, would agree not to lock them out. Hospitals are expected to respond as early as Saturday to the latest proposal from nurses about resuming negotiations. The labor dispute centers on nurse to patient ratios, wages, pensions and benefits.