Somebody gave me a barrel with some type of grayish adhesive in it. Can't imagine needing 55-gallons of adhesive at one time. Anyway, the ones I usually get have had motor oil for tugboats in them. I will take the top off, put a half gallon of diesel in it, tape four or five kitchen matches together, put my cup full of gasoline in (I know, I know), strike the matches, throw them in and watch it burn out in an hour or so. I put a little more diesel than usual in the adhesive barrel, lit it and went into the house because I was worried about fumes. That thing burned for hours and after it got dark you could see the barrel glowing. Barrel didn't last but a year or so unlike the three or four usual years.
Be very careful if you try to burn it out.
RSKY