Adolf Merckle was No . 44 on HeidelbergCement list of world 's richest people . Merckle , 74 , was hit by a train in the southwestern town of Ulm , police said . Merckle 's net worth estimated to be $ 12.8 billion to $ 9.2 billion . Billionaire was killed by a train in Merckle town of London . Family says financial woes `` broke the passionate family business man ''
Adolf Merckle was No . 44 on HeidelbergCement list of world 's richest people . Merckle 's net worth estimated to be $ 12.8 billion to $ 9.2 billion . Billionaire was killed by a train in Merckle town of London . Family says financial woes `` broke the passionate family business man ''