(a) Vehicle-mounted wireline units shall be chocked and/or spaded to prevent unintended movement of the unit toward the well bore. If chocks are used, there shall be a minimum of two (2).
(b) Skid-mounted wireline units shall be secured to prevent unintended movement.
(c) Wireline units shall be so located that they do not interfere with entrance or exit of employees from those units or other units on location.
053-7 Wyo. Code R. § 7-1