A foundation construction machine includes a self-moving/mobile assembly moving the construction machine. An upper structure mechanically connected to the self-moving/mobile assembly has an access point allowing access to the upper structure, and equipped ...

The present invention relates to a safety device (1) for a downhole tool (2) for controlling a delivery of electricity to an electrical component in the tool, comprising a first member (6) comprising a plurality of conductors (7,8,9), and a second member (...