[Joe 6-pack]

"The small vibration tool can shake the oven screen across a variety of frequencies, ranging from a light tapping to moderate shake, mission managers said."

Any vibration tool without a "jackhammer" setting is useless.

[Right Wing Assault]

If they vibrate the thing, it will wear off enough grains (1 millimeter or less) to go through the screen. They don’t need to pulverize the stuff. If they did, they would have built in a crusher.

Do you really think they didn’t try this thing out on as many different kinds of soil as they could find? Do you think they didn’t consult soil experts to see what they thought?