Siem Offshore drill floor crew (Manuel Cabusa, Floorman; Narciso Gobalane, Derrickman; Perfecto Cruz, Floorman; Ricky Belda, Assistant Driller; and Edwin Codilla, Floorman) making up the Bottom Hole Assembly (BHA). This pipe is thicker and heavier than the drill string and provides the weight on bit for coring and drilling operations. (Credit: Bill Crawford, IODP JRSO) [Photo ID: exp363_044]