A three-day national strike prompted by layoffs at the Dangote refinery has led to production losses of 600,000 barrels, the chief executive of the Nigerian National Petroleum Company has said. “I think it was unfortunate that the Dangote and PENGASSAN issue led to strike and whenever there is strike and critical staff manning critical facilities are not available and optimum production is almost impossible. In this particular case, we actually lost significant production of over 200,000 bpd that was deferred,” Bayo Ojulari told media.…