This from Steve Redick:

Found this clipping of the first use of the new Big John

Steve

News clipping from a huge fire at the Dixie Portland Flour Mill in Chicago 3-18-70

News clipping from a huge fire at the Dixie Portland Flour Mill in Chicago 3-18-70. Warren Redick collection

News clipping from a huge fire at the Dixie Portland Flour Mill in Chicago 3-18-70

News clipping from a huge fire at the Dixie Portland Flour Mill in Chicago 3-18-70. Warren Redick collection