"Exkin" #1/2.60 The mill charge is ground to a fineness of 5.5 on the N.S. scale in a pebble mill and discharged. Driers and Antiskinning Agent "Cab-O-Sil" M-7/38.8 Mineral Spirits/187.0 Cobalt Naphthenate (6%)/0.26 Alkyd (50% nonvolative)/517.0 Lead Naphthenate (24%)/1.29 Calcium Naphthenate (4%)/0.26