By Chibuike Oguh Data also showed that the U.S. unemployment rate fell to 4.1% last month, pushing the labor participation rate to a near 5-1/2-year low of 61.4%. The dollar weakened against the yen after the report, shedding gains made in recent days in the aftermath of a historic intervention last week between Japanese and U.S. authorities, which had pushed it to a 13-week low. It was last down 0.52% to 157.62 yen. "The big drop that we saw this morning is almost wholly related to the US employment report ...