question on steel

#1 iron ( prepared) iron or steel scrap ¼" or thicker and 2’ x 5’ or less
#1 iron (unprepared) same as above except over 5’ to 18’
#2 iron (prepared) 1/8 inch to ¼" and 2’ x 5’ or less
#2 iron (unprepared) 1/8" and 5’ to 18’