lew (04/15/83)
The crushing pressure of granite is about 30,000 psi and its specific gravity is 2.7. This information allows us to calculate the maximum size of a granite planet, through which one can drill a hole. Using my "one half rho gee ar" formula, I get an upper limit on the radius of about 450 km. This corresponds to a g-value of .34 m/sec2. Ceres has a radius of 370 km, so it would make a nice practical test case for a sane, sober, and serious net.project. Lew Mammel, Jr. ihuxr!lew