Shell plc (SHEL) , the British oil and gas giant, has mentioned that its refining margins took a significant hit in the third quarter. The company's profit margin in the Refining segment dropped 30% compared to the previous quarter. This was mainly due to a decline in the demand for refined products globally. The drop in refining margins due to a slowdown in economic activities globally is anticipated to affect the thirdquarter earnings of major energy firms worldwide. Further, refineries entering the marke ...