MIL-W-46870, MILITARY SPECIFICATION: WELDING OF ELECTRONIC CIRCUITRY, PROCESS FOR (06 JAN 1997) [S/S BY MIS-PRF-53093]., MIL-W-46870(MI), dated 21 May 1973, is hereby canceled. Future acquisition for this material should refer to MIS-PRF-53093, Welding of Electronic Circuitry, Process For.