Mors minime est 10 Metra ex acetylene explosio

Mixtura acetylenae et oxygeni, si vexillum gas cylindrici accendit et efficit ut explodat, eventus certa sorte intra decem-meter radii. Praeter periculum ab ictu cylindrici 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.