Don't forget to lift one side of the slab (shale bar, pry bar, shovel,etc.) and place a brick or stone under the slab before trying to break it. A slab on grade is much harder to break than one that is suspended above (experience teaches us much).

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Paul

1991 300TE (280,000)
1985 300TD (432,000 miles - retired)
1976 300D (225,000 - retired)
1975 300D (165,000 - retired)