Paragraph 1
In Column 1, after the words “Ammonium nitrate” insert “(a)”, and opposite thereto in Columns 2 and 3 for “500*” and “5,000*” substitute “350” and “2,500” respectively.
In Column 1, after the words “Ammonium nitrate” insert “(a)”, and opposite thereto in Columns 2 and 3 for “500*” and “5,000*” substitute “350” and “2,500” respectively.