Exploration for and Pre-feasibility of mining Polymetallic Sulphides ...

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Exploitation – Remote Operated Mining ROV Miner • Polymetallic Sulphides have strength of coal. • Nautilus study proposes drum cutters as used in coal mining • Drum cutter miner is 5m wide & cuts a 2m high ‘face’. • Each miner advances only 7 metres per hour. (1 track turn) • Cutting teeth designed not to produce fines but average 50mm particles (up to 70mm) • Nautilus partner Voest Alpine is a leading manufacturer of cutters & road headers
Exploitation – Material Handling ROV Miner • The ore body is ‘rock’ on a volcanic ridge so no silt - mud so no plume of fines as for nodules. • The miner has a pump located near the cutting head & positive suction in to this pump ensures no fines are lost. • This pump transports the material from the miner to the vertical ore hoisting system. • This system can either be a wire rope hoist system like in underground mines or a hydraulic pump system up a riser pipe Compare Cobalt Crust Crust is 40mm thick on an uneven surface. To mine just 40mm (without dilution) means leaving the surface uneven so ‘miner’ cannot operate on flat road surface whereas for polymetallic sulphides the ‘miner’ after one track length has made a flat ‘road’ to operate on.
Page 1 and 2: Exploration for and Pre-feasibility
Page 3 and 4: Nautilus this month commences the m
Page 5 and 6: Exploration - Polymetallic Sulphide
Page 7 and 8: 152º 04'E 3º 46'S 47' 48' 49' 3º
Page 9 and 10: Exploration - Sampling A geophysica
Page 11 and 12: Exploration - Drilling There has be
Page 13 and 14: Exploration - Drilling Mineral Depo
Page 15 and 16: Exploration - Crusts vs Sulphides
Page 17 and 18: Trial Mining - crust vs sulphides
Page 19 and 20: Exploitation - The Mine Parameters:
Page 21: Exploitation - Remote Operated Mini
Page 25 and 26: Exploitation - Pumping Option • N
Page 27 and 28: Exploitation - EEZ vs the AREA •
Page 29 and 30: Environmental considerations of exp
Page 31 and 32: Environmental - Exploration • GEO
Page 33 and 34: Environmental - Exploration • DRI
Page 35 and 36: Environmental - Exploitation • MI
Page 37 and 38: Environmental - Exploitation • OT
Page 39 and 40: Environmental - Questions • “Bu
Page 41 and 42: Environmental - Questions • “Bu
Page 43 and 44: Environmental - UNCLOS - MSR • DI
Page 45 and 46: Environmental - UNCLOS • (c) unde
Page 47 and 48: Environmental - UNCLOS • If copie

Exploration for and Pre-feasibility of mining Polymetallic Sulphides ...

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