YUANKY waxaa la bilaabay tan iyo 1989, kaas oo bixiya tayada sare, qiimaha tartanka iyo adeegga ugu wanaagsan ereyga. Waa kuwee soo saaraha xirfadleyda ah ee dhammaan noocyada kala duwan ee alaabta Kaarboon, oo ay ku jiraan baabuurta, burushka mootada iyo burushka, burushka qalabka korantada, burushka qalabka guriga, burushka mashiinka jiidista warshadaha, burushka mishiinka tareenka, giraanta mootooyinka, giraanta kaarboon-graphite ama giraanta garaafka saafiga ah ee sare iyo goor dhow.

Alaabooyinka aan caadiga ahayn ee noocyo kala duwan ayaa la qaabayn karaa oo lagu soo saari karaa shuruudaha gaarka ah ee isticmaalayaasha.

Ilaa inta warshadda la aasaasay, waxaan leenahay farsamada sare iyo wax-soo-saarka, qalab casri ah oo u gaar ah soo saarista iyo tijaabinta, koox injineero ah oo khibrad badan u leh naqshadeynta iyo soo saarista sanado badan.

Waxaan had iyo jeer ku adkeysaneynaa "Tayadu waa tan koowaad, daacadnimadu waa saldhigga" sida mabda'a warshadeena, waxaanan khibrad badan u lahayn wax soo saarka kaarboonka waxaanan higsaneynaa inaan noqono astaanta ugu sareysa.