2 ms·
Crushing rocks to sand already happens. Animats posted some interesting links the last time sand shortages were discussed here: https://news.ycombinator.com/it
by mrob 9y ago
Crushing rocks to sand already happens. Animats posted some interesting links the last time sand shortages were discussed here:
https://news.ycombinator.com/item?id=15208432 https://news.ycombinator.com/item?id=15208432