150 lbs/cu ft is a good rule of thumb for stone and concrete. Limestone is heavier though, at 171 lbs/cuft. So .... your 1000lb rock (limestone) is a cube 21.5" on a side. Sound's about right. </HTML>
150 lbs/cu ft is a good rule of thumb for stone and concrete. Limestone is heavier though, at 171 lbs/cuft.
150 lbs/cu ft is a good rule of thumb for stone and concrete. Limestone is
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