# Green Manganese demonstrates single process critical metals recovery from polymetallic nodules Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/green-manganese-demonstrates-single-process-critical-metals-recovery-from-polyme--dc5c0fcf-b53e-4e0b-a3bb-9413caa64a3f Original source: https://www.mining.com/green-manganese-demonstrates-single-process-critical-metals-recovery-from-polymetallic-nodules/ Publisher: miningcom Original announcement: 2026-09-15T20:23:54.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Green Manganese Technologies - Ticker: Unavailable - Exchange: Unavailable - Region: Unavailable - Primary commodity: Manganese - Secondary commodities: Nickel, Cobalt, Copper, Iron ore, Titanium - Document categories: Metallurgy - Extracted: 2026-09-15 21:22:28 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary Green Manganese Technologies has completed initial metallurgical test work demonstrating a proprietary hydrometallurgical process capable of recovering manganese, nickel, cobalt, and copper from polymetallic nodules. The integrated process reportedly achieves greater than 90% recovery for these metals while consuming up to five times less energy than conventional pyrometallurgical methods. Reasoning: Successful demonstration of a single-process hydrometallurgical route for polymetallic nodules with high recovery \(>90%\) and significant energy efficiency gains. - Positive factor: High recovery rates \(>90%\) for multiple critical metals - Positive factor: Proprietary hydrometallurgical process bypasses energy-intensive smelting - Positive factor: Significant energy savings \(up to 5x less energy\) - Positive factor: Simultaneous recovery of multiple metals in a single process - Negative factor: Initial metallurgical test work only \(bench/screening scale\) - Negative factor: Process complexity of polymetallic nodules Facts used in scoring: 4 ## Classification and evidence **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: The process is described as a hydrometallurgical platform involving selective dissolving and integrated circuits. Evidence · text > its hydrometallurgical platform is engineered to extract all principal critical metals **Single Domain Only** Polarity: negative Definition: Testing limited to one composite or domain — representativeness not established. Why it applies: only one composite was tested ## Extracted facts Stored fact records: 4. Some facts used in scoring do not have a stored record. ## Metallurgical Results (4) ### hydrometallurgical [Link to this fact](https://atlas-extractions.minestarters.com/news/green-manganese-demonstrates-single-process-critical-metals-recovery-from-polyme--dc5c0fcf-b53e-4e0b-a3bb-9413caa64a3f#fact-metallurgical-facts-0) polymetallic nodules · manganese #### Identity - Project: polymetallic nodules - Commodity: manganese #### Test Work - Program Status: preliminary - Test Type: hydrometallurgical - Processing Route: proprietary hydrometallurgical process - Sample: polymetallic nodules #### Recovery - Recovery: 90 % - Recovery Basis: actual\_test #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-15T00:00:00.000Z Reasoning: Reported recovery exceeds the strong threshold for manganese in a hydrometallurgical context. - Positive factor: Greater than 90% recovery Evidence · text > achieving greater than 90% recovery of manganese, nickel, cobalt, and copper simultaneously ### hydrometallurgical [Link to this fact](https://atlas-extractions.minestarters.com/news/green-manganese-demonstrates-single-process-critical-metals-recovery-from-polyme--dc5c0fcf-b53e-4e0b-a3bb-9413caa64a3f#fact-metallurgical-facts-1) polymetallic nodules · nickel #### Identity - Project: polymetallic nodules - Commodity: nickel #### Test Work - Program Status: preliminary - Test Type: hydrometallurgical - Processing Route: proprietary hydrometallurgical process - Sample: polymetallic nodules #### Recovery - Recovery: 90 % - Recovery Basis: actual\_test #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-15T00:00:00.000Z Reasoning: Reported recovery exceeds the strong threshold for nickel. - Positive factor: Greater than 90% recovery Evidence · text > achieving greater than 90% recovery of manganese, nickel, cobalt, and copper simultaneously #### Tags used in scoring **High Recovery** Polarity: positive Definition: Recovery at or above the exceptional band for the commodity and processing route. Why it applies: 90% is at or above the exceptional band \(90%\) ### hydrometallurgical [Link to this fact](https://atlas-extractions.minestarters.com/news/green-manganese-demonstrates-single-process-critical-metals-recovery-from-polyme--dc5c0fcf-b53e-4e0b-a3bb-9413caa64a3f#fact-metallurgical-facts-2) polymetallic nodules · cobalt #### Identity - Project: polymetallic nodules - Commodity: cobalt #### Test Work - Program Status: preliminary - Test Type: hydrometallurgical - Processing Route: proprietary hydrometallurgical process - Sample: polymetallic nodules #### Recovery - Recovery: 90 % - Recovery Basis: actual\_test #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-15T00:00:00.000Z Reasoning: Reported recovery exceeds the strong threshold for cobalt. - Positive factor: Greater than 90% recovery Evidence · text > achieving greater than 90% recovery of manganese, nickel, cobalt, and copper simultaneously ### hydrometallurgical [Link to this fact](https://atlas-extractions.minestarters.com/news/green-manganese-demonstrates-single-process-critical-metals-recovery-from-polyme--dc5c0fcf-b53e-4e0b-a3bb-9413caa64a3f#fact-metallurgical-facts-3) polymetallic nodules · copper #### Identity - Project: polymetallic nodules - Commodity: copper #### Test Work - Program Status: preliminary - Test Type: hydrometallurgical - Processing Route: proprietary hydrometallurgical process - Sample: polymetallic nodules #### Recovery - Recovery: 90 % - Recovery Basis: actual\_test #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-15T00:00:00.000Z Reasoning: Reported recovery exceeds the strong threshold for copper. - Positive factor: Greater than 90% recovery Evidence · text > achieving greater than 90% recovery of manganese, nickel, cobalt, and copper simultaneously ## How Atlas produces this analysis Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.