Ngo-Okthoba 15, iqembu lesithathu lombiko wokusebenza kokukhiqiza iToppi ngo-2021. Ngokusho kombiko, eqenjini lesithathu lika-201, indawo yezimayini yasePilbara eRio Tinto yathumela amathani ayizigidi ezingu-83.4 ensimbi, ukwanda ngo-9% kusukela enyangeni edlule kanye nokwanda ngo-2% kwalaba ababili. I-Rio Tinto ibonise embikweni ukuthi ngenxa yomthelela wokuphathwa kwama-freckles, amaphrojekthi okufaka esikhundleni amandla e-brownfield kanye nokubambezeleka kwesikhathi kuka-202, inani lezigameko zensimbi emayini yasePilbara esigabeni sesithathu lalingu-833 billion, kanye nokwehla okuhle ngo-4% kanye nokwanda kwenyanga nenyanga ngo-10%.
Ngaphezu kwalokho, ngenxa yeRio Tinto, ngenxa yokubonakaliswa kwemizwa eNtshonalanga ye-Australia, iKuddedley Valley Brownfield Project kanye neLobo River Green Brownfield Capacity Replacement Project kuye kwabambezeleka kancane. Umsebenzi wokuthunyelwa kwensimbi endaweni yezimayini zasePilbara eCanada ngo-2021 uzoba yizigidi ezingu-320. Amathani ~ izigidi ezingu-320 zamathani. Umgomo wama-briquette ensimbi aseCanada kanye nama-briquette ensimbi anombala ocolekileyo ngesikhathi esifanayo ufinyelela amathani angu-950 kuya ku-1050 (cabanga ngamathani angu-1050 kuya ku-1200).