Reality TV could soon become wall-to-wall Wahlberg. That’s because in addition to the previously announced reality show Mark Wahlberg is making about the International Brotherhood of Teamsters, and the one Donnie Wahlberg is currently working on about the Boston Police Department, Bob Wahlberg has produced a pilot called “Boston Metal,” about a family-owned scrapyard in Brockton. (The first and so far only episode airs Friday at 9 p.m. on National Geographic Channel.)

“We’re hoping, based on ratings and response, that it’ll be picked up,” Bob Wahlberg told us Friday. (Donnie is executive producer of “Boston Metal.”) The show follows the Morrissey family, owners of ECO Recycling Systems Inc. in the city of champions. What makes the show appealing, Wahlberg said, are the people: John Morrissey Sr. and John Morrissey Jr. are both former mixed-martial arts fighters, and the daughter has a knack for finding treasure in the trash.

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