Innovation at Depth – Go with the Flow: Mine Planning to Reduce Impact
TMC mapped how sediment plumes follow seabed contours downslope. Sweep mining now covers 500 to 1,000 meters instead of 80 to 100 km runs.
Innovation at Depth – Midwater Release: Less Up, Less Down
TMC's system adds a hydrocyclone step to filter fine sediment. Sediment returns at 2,000 meters depth, below the top 1,000 meters where most biomass lives.
NOAA Determines TMC USA’s Consolidated Deep-Seabed Mining Application is in Substantial Compliance
NOAA found TMC USA's consolidated deep-seabed mining application, covering about 65,000 km2, in substantial compliance.
Innovation at Depth – Calming the Current
Allseas' diffuser returns mining discharge water near the seabed. It recovers up to 95% of sediment before the riser stage.
Innovation at Depth – Smarter Separation At The Source
Allseas is developing a Hopper 2.0 to separate nodules from sediment. The design keeps 95-98% of sediment suspended for return to the seafloor.
Deep-Sea Nodule Collection – Then and Now
TMC's video compares 1970s nodule collection with its new system. Allseas built the new miner to cut impact, fifty years after the tech began.
Carbon Sequestration – What does the data tell us?
TMC's Michael Clarke says most ocean carbon sits in the water column. Less than 4% is stored on the seafloor.
Innovation at Depth – Make it Float
TMC's new collection system sharply cuts seabed disturbance. It disturbs sediment to just 3 cm, versus about 80 cm for older tech.
Innovation at Depth – Collect Nodules, Not Mud: The Coanda Effect
TMC's Allseas-designed collector lifts nodules using Coanda nozzles. Its 2022 CCZ test found 98% of sediment resettles within 1-2 km.
B.C. Lawsuit Alleges TMC Used “Unlawful Intimidation” in $23.6B Seabed Mineral Dispute
American Metal sued TMC (Nasdaq: TMC) in B.C. court, alleging intimidation over a $23.6 billion Clarion Clipperton Zone nodule dispute.