Pictures of Hazardous Noise: 20 minus, thirty plus... "clean"...
Pictures of Hazardous Noise: Fine, 30 mesh minus material really close...
Pictures of Hazardous Noise: Fine sample, different angle
Pictures of Hazardous Noise: 30minus or N scale coarse, HO fine ballast?
Pictures of Hazardous Noise: Rail graffitti but also a good closeup of new, clean prototype ballast...
Pictures of Hazardous Noise: Ballast sample photo 4
Pictures of Hazardous Noise: Ballast sample photo 3
Pictures of Hazardous Noise: Ballast sample 1 angle 2
Pictures of Hazardous Noise: Ballast sample 1
Pictures of Hazardous Noise: Homemade ballast screen plant disassembly
Pictures of Hazardous Noise: Homemade ballast screen plant
Pictures of Hazardous Noise: 7151 on the wye fly, a removable section of track ballasted with the "holiman spec" material
Pictures of Hazardous Noise: Shinohara turnout ballasted
Pictures of Hazardous Noise: 7151 posed at the wye