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r <br /> THE Site-S ecific <br /> MARK <br /> in rim GROUP <br /> NGINEERS & GEOLOGISTS, INC Health and Safety Plan <br /> (Continued) <br />' COMMUNICATIONS <br /> Field Phone Location <br /> Field Radio Frequency Location <br /> STANDARD HAND SIGNALS <br />' Hand gripping throat Out of air, can't breathe <br /> Grip partner's wrist Leave area Immediately <br /> Both hands on waist Leave area Immediately <br /> Hand on top of head Need assistance <br /> Thumbs down No, negative,don't understand <br /> Thumbs up Yes,okay, I understand <br /> Open hand, palm down <br /> drawn across throat Stop <br /> SIREN/HORN BLAST SIGNALS <br /> r, <br /> r <br /> r <br /> r1 <br /> • <br /> r <br /> Paae of <br />