| http://www.w3.org/ns/prov#value | - with said axis, for connecting or disconnecting joints in the string, to a second position of alignment with the mousehole for engagement with a pipe section therein, and to a retracted position at a side of the axis essentially opposite that at which the mousehole is located; said mounting means including two parallel tracks extending along a floor of the rig at opposite sides of a rotary table o
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