Contains a series of 43 full-color reference photographs to be used as a supplement to the SSPC standards for hand and power tool cleaned steel. Shows a total of seven different steel surfaces (four uncoated and three previously coated) before and after hand tool cleaning (SP 2), power tool cleaning with power wire brushes and sanding discs (SP 3), power tool cleaning to bare metal (SP 11), and commercial grade power tool cleaning (SP 15). Also contains photos of SP 11 surfaces with a restored profile, a revised guide to the use of reference photographs, a new table of standards and conditions depicted, and additional explanatory notes.