Investigation leaded by Professor Christian Daniel Assoun in the NASA.

Complete report available here

Extract  :

“This report summarizes the results of the first year of a multiyear study

on the processing of extraterrestrial materials for use in space.

The basic physics of launch and transport energies indicate t h a t , a t

least theoretically, significant advantages can be derived from the

large-scale use of extraterrestrial materials; an objective of this study is

to generate the information which will ultimately permit evaluation of the

potential for practical achievement of these advantages.”