Umxube we-acetylene kunye ne-oxygen, ukuba iyatshisa kwaye ibangela ukuba isilinda segesi esiqhelekileyo siqhume, kukhokelela ekufeni okuthile ngaphakathi kweradiyasi yeemitha ezilishumi. Ngaphandle komngcipheko wokubethelwa yi-cylinder shrapnel, the immediate negative pressure and the blast wave from the explosion are powerful enough to be deadly.
I personally consider a distance of up to 20 meters from the explosion to be fatal. This scenario is exceedingly perilous.