St Barbara (ASX:SBM) share price craters 8% on production fall Mitchell Lawler | April 28, 2021 12:25pm | More on: Image source: Getty Images St Barbara Ltd(ASX: SBM) shares have lost their shine today after the gold miner released its third-quarter report to the market. At the time of writing, the St Barbara share price is down 8.13% to $1.865. So, what was in the report that has sent investors scrambling? What’s impacting the St Barbara share price? Unfortunately for St Barbara shareholders, the finance side of things was the complete opposite of what investors hope to see. Typically, the desire is for production to increase and costs to fall – which means profits grow.