A drilling machine drills foundation holes known as drilled shafts or bored piles with a drilling tool attached to an end of a kelly. The continuous method provides a high purity of the products, nearly quantitative yields and a high rate of throughput. The device also incorporates a store for storing an audible message available to the wearer, through a headphone socket, loudspeaker or the like, when play back is initiated by a control. Other devices or cables within the vehicle can than quickly mate to the clockspring connection module, via a corresponding connector.