An approach to Technological Sublimation that starts from the most common substances on earth.
Links
- Top 4 elements make up 90% of crust - [1]
- Top elements in earth's crust - [2]
- Household product elements - [3]
- Carbide - [4]
- Drilling to the mantle - [5]. Geothermal gradient is 5-75C/km.
