Rescue personnel continued efforts to clear debris in an expanding sinkhole near Tokyo on Friday in the hope of saving a man trapped as the crucial 72-hour threshold of survival passed.Preparations continued to install a ramp leading into the sinkhole, now measuring around 40 meters wide and 15 meters deep, so that machinery can be brought in to clear debris and reach the imperiled 74-year-old truck driver."We are doing what we think is best. All we can do is proceed with the operation," a rescuer from a local fire department said.The hole has widened continuously since Tuesday when it appe…READ FULL ARTICLE