Kwakira bigomba kuba bigizwe n'ibice by'ingenzi bikurikira:
a) ibinyomoro bya plastiki
b) Tera impeta
c) Umubiri wa sock hamwe na sisitemu ya sisitemu
d) Igipapuro
Nickel yometseho imiringa ihuza imbaho zahinduwe muburyo bwo kwakirwa hamwe na O-impeta ya peteroli nziza.