<P> A major spur to the development of gas odorants and odorizers was the March 18 , 1937 natural gas leak that blew up a school in New London , Texas , killing 294 children and teachers . </P>
<P> A major spur to the development of gas odorants and odorizers was the March 18 , 1937 natural gas leak that blew up a school in New London , Texas , killing 294 children and teachers . </P>
when was mercaptan first added to natural gas
when was mercaptan first added to natural gas
1937
1937