Will there be enough copper for producing Duyunov's motors?

Dmitriy Duyunov listed a number of reasons why this issue shouldn’t be of any concern:

1) “Slavyanka” uses 30% less copper per 1 kW of installed capacity than its alternatives;
2) copper is extracted in Russia that has enough deposits for a long time;
3) Duyunov’s technology applied to motor manufacturing means using exhausted standard motors, and the latter are an additional copper resource.