โ Scribed by Murray, John
No coin nor oath required. For personal study only.
A n csplosion in tlic scivcrs froiii a!i y causc, liquid or gnseoiis, is likely not only to cnusc dnmiigc to strccts, builtlings, ctc., but nlso to do dninagc t o piiblic utility scrviccs, rind niay cause a secondary csplosioii froin ruptured gns iiiniiis, cvcii if t h s c \vcrc sound bcforc tlic cxplosioii. Tlic sniiic rciiinrks apply to cxplosio!is in other uiidcrgroiiiid systcliis.
Prcwiitioii is much liiorc iniportaiit tliaii tlic iiivcstigntion of an csplosion nftcr it occurs. Explosion prevention criii only be cnrricd out by thc systciniitic inspectioii of nll ~nniiholcs,. scwcrs, ctc., by tr:iiiied invcstigntors using spccinl cquipmciit and uiidcr techiiicnl supcrvision. The public nutlioritics must hnvc some nie!:ins of cnforciiig the safe Ii:~ndling of iiiflaiiiiiiable liqiiitls niid gnscs.
'I'liesc fiicts apply to nll largc cominunitics, and the Iirrgcr tlic coniiiiiiiiity the inorc iniportniit thcy l~ccoinc bcciiusc tlic undcrgrouiid systcms hnvc grown iiiorc coniplicritctl, wit11 n rcsultiiig incrcnsc in tlic diiiigcr of csplosioiis.
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