(motorhand): Responsible for maintenance of various engines, water pumps, water lines, steam lines, boilers and various other machinery incorporated into the rig on a daily basis. Also responsible for movement of equipment on site. On a four-man drilling crew the motorman is also the chainhand. Boilerman: Though this position is now obsolete, before the mid-20th century, when most rigs were steam-powered, the boilerman was responsible for the boilers. The boilerman also functioned as the laundryman, steam-cleaning the last crew's greasy work clothes in the "blow barrel" and then hanging them up to dry in the warm air near the boilers. Chainhand (Floorhand): This position is given to a floorhand that can also throw the chain that helps spin up the connections, but with some tasks being automated on the drilling rigs is pretty much just another floorhand that watches out for the worm and does not get as filthy. Leadhand/Floorhand ("worm"): Usually the lowest member of the drilling crew, those in this position are often nicknamed "worm", because this hand has the dirtiest and most physically demanding position. The floorhand works primarily on the rig floor where he is the one actually operating the tongs, iron roughneck, tugger, and catwalk, and doing pretty much any other job which is asked of him. Roustabout (leasehand): On bigger rigs and offshore rigs, a roustabout does most of the painting and cleaning so roughnecks can take care of other work. Ginsel: The worm's helper. This is also a derogatory insult among roughnecks. Also called the fifth hand. Iron Roughneck is also a specialized equipment used in oil drilling operations. Whether pipe is being fed into the wellbore or it is being taken out, the iron roughneck uses a rotary table and torque wrench(es) to make up or break down pipe. In Canada on land-based rigs, the term roughneck refers to the floorhand. There will also be roughneck crew based on offshore oil rigs. The duties of a roughneck working offshore can include: Connecting and disconnecting the drill pipe Adding fresh lengths of pipe Removing things like rock cores from the pipe as the operation goes on De-sanding and de-silting Working in the mudroom General cleaning and maintenance of the drilling operation Cultural references The Edmonton Oilers of the National Hockey League used to use an oil rigging roughneck with an ice hockey stick as one of their secondary logos. The roughneck, as a