Na Ọktoba 15, akụkọ arụmọrụ mmepụta Toppi nke atọ na 2021. Dịka akụkọ ahụ si kwuo, n'ọkwa nke atọ nke 201, mpaghara igwu ala Pilbara nke Rio Tinto bufere tọn ígwè nde 83.4, mmụba nke 9% site na ọnwa gara aga na mmụba 2% na abụọ ahụ. Rio Tinto gosiri na akụkọ ahụ na n'ihi mmetụta nke njikwa freckles, ọrụ nnọchi ikike brownfield na igbu oge 202, ọnụọgụ ihe mberede ígwè na ebe igwu ala Pilbara n'ọkwa nke atọ bụ ijeri 833, yana mbelata dị mma nke 4% na mmụba kwa ọnwa nke 10%.
Tinyere nke ahụ, n'ihi mmetụta uche dị na Western Australia, ọrụ Kuddley Valley Brownfield Project na Lobo River Green Brownfield Capacity Replacement Project ebelatala ntakịrị oge. Ọrụ mbupu ígwè nke mpaghara igwu ala Pilbara na Kanada na 2021 ga-abụ nde 320. Tọn ~ nde tọn 320. Ihe mgbaru ọsọ nke briquette ígwè Canada na briquette ígwè ntụ ntụ n'otu oge ahụ ruru tọn 950 ruo tọn 1050 (chee echiche tọn 1050 ruo tọn 1200).