Off-take Schedules, page-24

Saw a bio chemistry program on 3 D printers once. In the next 5 years capable of making hearts ,with stem cell technolodgy ,and lithium is used a lot in medicine ,pills etc ,quite a lot of minerals appear to be in the human gene pool,copper , calcium ,So I do wonder if its possible
that natural resourced graphene from graphite could possible be the next wonder material ,for artificial organs , in there 3 D printing
machines in future ....