Note 30 — ENDNOTES
Reading edition
This was my guess during Vance’s operation. Later I calculated the weight of the lid. It was ten feet long, four feet wide, and was surmounted by a large carved figure. A conservative estimate would give us ten cubic feet for the lid; and as the density of granite is approximately 2.70 grams per cubic centimeter, or 170 pounds per cubic foot, the lid would have weighed at least 1,700 pounds. (return)