Apparatus for drilling bore holes; Apparatus for drilling wells; Apparatus for use in drilling

Computer hardware for use with drilling apparatus; Computer hardware for use with drilling instrument; Computer hardware for use with drilling operations; Apparatus for processing data; Apparatus for data processing; Apparatus for controlling the processing of data; Computer programs for data processing; Computer apparatus for the storage of data; Electrical devices for storage of data; Apparatus for the communication of data; Apparatus for retrieving data; computer; apparatus; data; processing data