WICHITA, Kan.  -  A man, 44, was rushed to the hospital with serious burn injuries after an explosion at a north Wichita business.  It happened in the 4900 block of N. Broadway just before 3:00 p.m.
     Dispatchers said an empty crude oil tanker truck exploded inside the business.  Welding work was taking place at the time of the accident, but it is unknown what caused the explosion.  The explosion also damaged the business.