Tokyo, July 31 (Jiji Press)--The dollar tumbled below 160.50 yen in Tokyo trading Friday morning amid speculation that the Japanese government and the Bank of Japan conducted yen-buying, dollar-selling intervention in the foreign exchange market. Reports that the Federal Reserve

July 30 : The dollar sank against the Japanese yen on Thursday with traders alert to the possibility of intervention from Japan to prop up its stubbornly weak currency. The dollar…

Having collapsed to its weakest relative to the dollar in 40 years...