Mixing procedure consists of adding the isoamyl acetate to the xylene and then adding the mixture to the 'Spenkel" M80-50CX. The ground glass particles are stirred into the diluted resin to insure thorough wetting of the glass particles. Finally, the remaining ingredients, the asbestine, asbestos floats and carbon black are blended together, added to the diluted resin-glass particle component and blended to a homogeneous mix.