Section 134(a) in The Orissa Building and Others Construction Workers (Regulation of Employment and Conditions of Service) Rules, 2002
(a)reliable and effective means of communication such as telephone or walkie-talkie are provided and are maintained in working order for arranging better and effective communication or tunneling work at the following locations, namely-(i)working chamber at the face of an excavation;(ii)intervals of hundred meters along the tunnel;(iii)working chamber side of a man lock near the door of such man lock;(iv)interior of each chamber of a man lock;(v)location conspicuous a lock attender's station;(vi)a compressor plant;(vii)a first-aid station;(viii)outside the portal or the top of a shaft;
