Show CLERK KILLED BY l CH CHE CHEMICAL ICAL EXPLOSION SV WATERLOO la Ia Dec An 2 An An explosion of ot chemicals late yc yesterday caused the dc death th 0 of or William and the serious Injury of or John Rogers clerks In a drug store here herc Roberts Roberts' was compoundIng compound- compound Ing chemicals to be bo used to produce a a. calcIum calcium cal cal- clum light When he ho momentarily stepped awry away from the compound an inexperienced clerk attempted too to mix the ingredients Ingredient The explosion followed died an hour later Roberts Roberta Roberts Roberts' Rob Rob- erts' erts condition is considered serious Four customers In the the- the store store were hurt The Interior of the store was wrecked |