Abstract—Accurately positioning detection of concealed deposits or ore-bodies is one of the difficult problems in mineral exploration field. Theory calculation and exploration practices for tunnel gravity indicate that 3D high-precision Tunnel Gravity Exploration Method (TGEM) can find concealed high-density three-dimensional ore-bodies in the depth. The ore-finding breakthroughs at the depth o...

Integrated field studies on environmental levels, bioavailability, biological exposure, and effects SUMMARY Iron-ore is the source of primary iron for the world's iron and steel industries. Almost all (98%) iron-ore is used in steelmaking. Australia and Brazil together dominate the world's iron-ore production, while China is the world's largest iron-ore consumer. In Brazil, iron-ore mining is m...

Direct reduction of iron ore (DRI) is gaining an increased attention due to the growing need decarbonize industrial processes. The current DRI processes are performed using reformed natural gas, which results in CO 2 emission, although it less than carbothermic blast furnace. Carbon‐free may be realized through utilization green H as a reducing agent, place gas. Herein, effects various gas mixt...