Let me hunt around for a link. This is what I used to research before I got sucked into politics. (Via studying the effects of Scientology and its influence on politics, ironically.)
Let's see:
The RPF
In November, 1973, Hubbard came up with an idea to handle troublemakers, backsliders or anyone else aboard who happened to displease him. He created the Rehabilitation Project Force (the "RPF"), the Sea Org's version of a prison camp. RPFers were to do hard physical labor all day and in the evenings were to audit one another to get off their overts and withholds and deal with their evil intentions. RPFers were not allowed to speak to a crew member in good standing, unless spoken to and had to wear black boiler suits. They were allowed to eat only after everyone else on the ship had finished and were not allowed to leave the ship. Hubbard considered RPFers to be psychotic criminals that should be grateful that he was giving them a chance to be rehabilitated. Isn't it strange that some of Scientology's top leaders today, including Pat Broeker and Norman Starkey have been on the RPF? Most Scientology executives have, at one time or another, been on the RPF.
http://www.cs.cmu.edu/~dst/Library/Shelf/pignotti/#rpf
3. Social Maltreatment
A. Boiler Suits; Formal Address to "Superiors;" Armbands
The line between physical maltreatment and social maltreatment was not always clear, yet certain activities involving such occurrences as degradations, restrictions in verbal and written communication, and very low pay seem distinctive enough to warrant mention. RPF degradations were many. They included having to wear jumpsuits or boiler suits (Kent Interview with Pat, 1997a: 22; Kent Interview with Young, 1994: 18; Superior Court of the State of California, 1984: 1432; Whitfield, 1989: 5), and having to refer to everyone as "sir" (Rosenblum, n.d.: 2: Whitfield, 1989: 5). (By the late 1980s, the thirty or so inmates in the Happy Valley RPF were allowed to wear black shorts because of the extreme desert heat (Kent Interview with Prince, 1998: 45). Susanne Schernekau/Elleby in Copenhagen even had to write a letter to a superior (addressing it "Dear Sir") in an attempt to get a second jumpsuit and requisite cap, since she was wearing the only suit that fit and it needed washing (Schernekau/Elleby, 1989a). In addition, RPFers were prohibited from walking — running only (Rosenblum, n.d.: 1). By the late 1980s, different coloured arm bands — including white and gold — visually identified people's progress through the RPF program (Schernekau/Elleby, 1990a). According to former RPFer, Jesse Prince, people in the RPF's RPF in the late 1970s wore black strips of cloth on their arms (Kent Interview with Prince, 1998: 18). By (presumably) the late 1980s and the early 1990s, people on the RPF's RPF reportedly wore orange arm bands; new RPFers wore black arm bands; RPFers who had a few "privileges" (such as having dinner with family members) wore white arm bands; and persons who could sleep with their spouses one night a week displayed gold arm bands (SB, 1998b: 1).
B. Restrictions on Speaking and Writing
Many people indicated that their ability to communicate with others was severely curtailed, although they expressed the restrictions with slightly different emphases. Dale seemed to express the basic restriction most directly when he informed me, "ou could not talk to anybody was not on the RPF unless you were spoken to…" (Kent Interview with Dale, 1997: 5: see Kent Interview with Pat, 1997a; 23). Englishman Peter Forde stated that someone on the RPF was "allowed to speak with only 1 person at all (the MAA ," who directly oversaw the program (Forde, 1996: 3; see Pignotti, 1989: 24). Julie Mayo insisted that she "was not allowed to talk to the rest of the staff or even make a phone call" (J. Mayo, 1996: 8).
http://www.solitarytrees.net/pubs/skent/brain.htmhttp://www.metacafe.com/watch/3191529/which_church_has_a_navy/