برگزاری چالش فناوری Charge On برای برقی کردن تراک معدنی

Charge On Innovation Challenge - winning ideas in global project to decarbonise mining https://youtu.be/XmYYcML0w9Q http://www.vale.com/brasil/EN/aboutvale/news/Pages/vale-bhp-e-rio-tinto-back-eight-winning-ideas-in-global-charge-on-innovation-challenge-to-decarbonise-mining.aspx