Subcommission XII–D of the International Institute of Welding, chaired by David Shackleton, initiated the
task of assigning the designations for welding filler metals in 1984 and appointed R. David Thomas, Jr. as
rapporteur.
AWS QC7-1993 history
1993AWS QC7-1993 Standard for AWS Certified Welders [Superseded: AWS QC3]