/ Joe (L) and Daniel Mullins at the site of WPFB. The Mullins family has been instrumental in keeping bluegrass music thriving in Southwest, Ohio. These was a time in the 1940’s and 50’s, when people arrived from Appalachia daily in Dayton in buses and cars. They came in hopes of jobs at factories such as National Cash Register, Frigidaire and GM. Many brought guitars, mandolins and banjos and settled in East Dayton. A new book and CD, Industrial Strength Bluegrass tells this history. Dave Barber has the story of the Mullins family, one of the families that sits at the center of this story.