You could also have a parachute at top that would open in case the engine and fuel exploded, so long as the waste casing could withstand the forces. Also, launc

You could also have a parachute at top that would open in case the engine and fuel exploded, so long as the waste casing could withstand the forces. Also, launching on a remote island could be beneficial, but it'd increase the cost. Also, there could be smaller more frequent rockets than larger ones.