17 P er sonal Pr o t ectiv e Eq uipment PPE and Eq uipment Hearing Pr o t ection In e xploration the need f or hearing pr o t ection is common espe cially ar ound drills machiner y and air craf t Most freq uent use is in helicopt er s eq uipped with ear phones which f acilitat e com munication be tw een pilo t and passenger s and reduce f atigue and mo tion sickness Hearing pr o t ection is also req uired when using chain sa ws or r ock sa ws ar ound drill rigs or when loading air craf t Hard T oe Boo ts Pr o t ectiv e f oo tw ear com plying with the current CSA Standar d f or Pr o t ectiv e F oo tw ear and suitable f or the type of w or k or activity being per f ormed must be w orn b y an y per son where there is a risk of f oo t injur y or where req uired b y a manager or a mines inspect or In e xploration har dt oe w or k boo ts should be w orn dur ing r ock e x ca v ation w or k and ar ound undergr ound w or kings Al w a ys w e ar s af e t y g la s se s when hammer in g a r oc k