Gold surged to a seven-week high and silver climbed even faster Friday after the US economy unexpectedly shed jobs in July, weakening the case for another Federal Reserve interest-rate increase. Gold remains about 21% below its late-January record near $5,600, while silver is nearly half below its $121.67 peak. June employment was revised down to a gain of 20,000 and May to 63,000, reducing the 12-month average to 34,000 jobs. Rates retreatInterest-rate markets repriced rapidly after the data, reducing expectations for a September Fed increase. The July employment report complicates the Fed’s next decision.