(c) is familiar with the Safety Manual for Geophysical Field Operations, 6th edition, 1986, published by the International Association of Geophysical Contractors, as amended from time to time; and
c) connaissent bien le manuel intitulé Safety Manual for Geophysical Field Operations, 6 édition, 1986, publié par l’International Association of Geophysical Contractors, avec ses modifications successives;