US Cash Crude — Grades fall as US supply set to rise, refinery demand slips
HOUSTON, Sept 18 (Reuters) — Grades broadly fell on Friday, dealers said, as domestic output is set to rise while refinery demand weakened. US energy firms this week added rigs for a second week in a row for the first time since July, energy services firm Baker Hughes said in its report on Friday. RIG/U Oil rigs rose b