Calming the Current
Allseas designed a diffuser system to slow discharged sediment flow. Over 95% of the sediment stays within the gravity current near the seabed.
Box Core Sampler
TMC dropped box core samplers at hundreds of sites on the seafloor. Each core lifted a square meter of seabed to count nodules and sediment life.
Water Tower Research: TMC’s Nodule City Plans
TMC CFO Craig Shesky detailed Nodule City plans at Water Tower Research's conference.
TMC Announces Appointment of Liam Mallon, Former President of ExxonMobil Upstream, to its Board of Directors
TMC named ex-ExxonMobil Upstream president Liam Mallon to its board. He will lead its Sustainability and Innovation Committee; Brendan May steps down.
TMC CFO discusses proposed Nodule City nodule processing plant in Brownsville, Texas
TMC CFO Craig Shesky discussed the planned Nodule City plant. It would process nodules in Brownsville, Texas.
Midwater Release Less Up Less Down
TMC discharges nodule-system return water at 2,000 meters deep. The depth bypasses about 95% of marine life, mostly within 1,000 meters.
How nodules reach the surface
Allseas has refined the nodule collection system tested in 2022. It uses a 4-km riser and three subsystems to lift nodules to the surface.
Burgum Says US Deep-Sea Mining Permits Could Come Within Months
Interior Secretary Doug Burgum told the G20 energy ministerial in Houston on September 14, 2026 that US deep-sea mining permits could be issued within months. At least six companies have already applied to NOAA or asked Interior for a lease sale.
Go with the Flow – Mine Planning to Reduce Impact
TMC says it plans mining around the deep ocean's natural currents. At 4,000 meters water moves with the tides, steering sediment into mined ground.
NOAA Publishes TMC USA’s Consolidated Application for an Exploration License and Commercial Recovery Permit for TMC USA-A in the Federal Register
NOAA has published TMC's consolidated USA-A application in full. Comments close October 19, with a hearing on October 13.