16 Alw a ys w ear a h at in wint er this should be a t oq ue or pref erably a 1 00 w ool peak ed hat with ear faps Sixty per cent of body heat is lost thr ough the t op of an unco v ered head In wint er th e best out er garment is a long thighlength par k a with hood and bo tt om dra w string A full fur trimmed hood will pr o t ect the f ace Mitt ens pr o t ect the fnger s be tt er and are much w armer than fngered glo v es A ttach mitt ens t o tape threaded thr ough arms of jack e t t o pre v ent loss Leather mitt ens with w ool liner s are the best and should be tightly closed at the wrist Insulat ed half rubber half leather boo ts with insoles tw o pair s if e xtremely cold that are w arm and w at er pr oof are essential T ools and Equipment Bef ore using t ools and equipment ensure that y ou are familiar with the operating requirements A dequat e instructions must be pr o vided t o those with no e xperience U nder stand ho w the eq uipment functions and the possible danger s Demonstrat e correct operating pr ocedure Saf e ty Glasses A n y per son who ma y be e xposed t o specifed risks of e y e injur y must w ear pr operly ftting goggles f ace shields or o ther e y e pr o t ectiv e eq uipment com plying with the current Canadian Stan dar ds Association CSA Standar d f or Indus trial Ey e and F ace Pr o t ect or s and suitable f or the type of w or k or activity being per f ormed Saf e ty glasses should be used in r ock sam pling core splitting and t ool grinding Man y com panies assume the cost of prescription saf e ty glasses f or their feld cre ws