(a) On all wells where cable tools are employed, the surface casing shall be tested by bailing to insure a shutoff before drilling below the casing point proceeds.

(b) Wellhead connections adequate to control blowouts will be employed.

(c) Any oil or gas encountered above the ultimate objective in sufficient quantities as to constitute a hazard or waste if permitted to escape must be shut off before drilling proceeds deeper. Shutoff may be accomplished either by mudding, cementation or by the running of a string of casing. The hole must be tested by bailing to insure shutoff before drilling is resumed.