pFirefighters from Maine and New Hampshire battled a fire at an abandoned mill in Sanford, Maine, the evening of Friday, June 24.ppThe building used to be used as a shoe factory, WMTW-TV reported.a The abandoned building was considered very dangerous and had been the site of a previous fire, according to WCSH-TV.appThis vision is within 15 minutes of the start of the fire, according to the uploader.