RIYADH – A subsidiary of Saudi mining firm Maaden restarted a diammonium phosphate (DAP) fertilizer plant in Ras Al-Khair Saturday after it shut it down for maintenance during a period of low seasonal demand, Maaden said. Maaden will ramp up output on Feb. 18 as scheduled, it said late Saturday in a bourse statement. In January, the Saudi firm said the three-week shutdown would have no impact on its ability to meet its obligations to customers of the industrial fertilizer and that the ammonia plant at Ras Al-Khair would continue to operate normally. Maaden Phosphate Co. is 70 percent-owned by Maaden and 30 percent held by Saudi Basic Industries Corp. (SABIC). — Reuters