SIC 1220 · Mining, Oil and Gas
Silver Ores
OpenFilings tracks 3 companies that the SEC classifies under Standard Industrial Classification code 1220; the most recent filing among them is dated Sep 28, 2026. 3 of them report standardized annual figures in XBRL, shown in the revenue column.
SEC EDGAR snapshot updated Oct 27, 2026, 11:27 PM EDT. Not investment advice.
Companies in this industry
| # | Company | State | Latest filing | Revenue (latest FY) |
|---|---|---|---|---|
| 1420 | CNR Core Natural Resources, Inc. | PA | Sep 23, 2026 | $4.2BFY2025 |
| 1422 | HCC WARRIOR MET COAL, INC. | AL | Sep 25, 2026 | $1.3BFY2025 |
| 2969 | METC Ramaco Resources, Inc. | KY | Sep 28, 2026 | $536.6MFY2025 |
Ranked by position in the SEC company ticker list (roughly by market value) among all companies we track. Revenue is the latest full fiscal year; amounts in a foreign currency are shown with its code.
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Latest reports from these companies
Annual, quarterly and current reports and proxy statements filed by the companies above, newest first.
| Filed | Company | Form | What it is | Original |
|---|---|---|---|---|
| Sep 28, 2026 | METC Ramaco Resources, Inc. | 8-K | Other events· period Sep 25, 2026 | Document · Index |
| Sep 14, 2026 | METC Ramaco Resources, Inc. | 8-K | Regulation FD disclosure· period Sep 14, 2026 | Document · Index |
| Sep 10, 2026 | METC Ramaco Resources, Inc. | 8-K | Director or officer change; Regulation FD disclosure· period Sep 4, 2026 | Document · Index |
| Sep 4, 2026 | METC Ramaco Resources, Inc. | 8-K | Regulation FD disclosure· period Sep 4, 2026 | Document · Index |
| Aug 20, 2026 | METC Ramaco Resources, Inc. | 8-K | Regulation FD disclosure· period Aug 20, 2026 | Document · Index |
| Aug 19, 2026 | CNR Core Natural Resources, Inc. | 8-K | Director or officer change; Regulation FD disclosure· period Aug 18, 2026 | Document · Index |
| Aug 6, 2026 | CNR Core Natural Resources, Inc. | 10-Q | Quarterly report· period Jun 30, 2026 | Document · Index |
| Aug 6, 2026 | CNR Core Natural Resources, Inc. | 8-K | Results of operations; Regulation FD disclosure· period Aug 6, 2026 | Document · Index |
| Aug 5, 2026 | HCC WARRIOR MET COAL, INC. | 10-Q | Quarterly report· period Jun 30, 2026 | Document · Index |
| Aug 5, 2026 | HCC WARRIOR MET COAL, INC. | 8-K | Results of operations· period Aug 5, 2026 | Document · Index |
| Aug 5, 2026 | METC Ramaco Resources, Inc. | 10-Q | Quarterly report· period Jun 30, 2026 | Document · Index |
| Aug 4, 2026 | METC Ramaco Resources, Inc. | 8-K | Results of operations; Regulation FD disclosure· period Aug 4, 2026 | Document · Index |
| Jul 29, 2026 | METC Ramaco Resources, Inc. | 8-K | Regulation FD disclosure· period Jul 28, 2026 | Document · Index |
| Jul 24, 2026 | METC Ramaco Resources, Inc. | 8-K/A | AMENDMENT NO. 1 TO FORM 8-K· period Sep 18, 2025 | Document · Index |
| Jul 24, 2026 | METC Ramaco Resources, Inc. | 10-K/A | Amended annual report· period Dec 31, 2025 | Document · Index |
| Jun 25, 2026 | METC Ramaco Resources, Inc. | 8-K | Regulation FD disclosure· period Jun 25, 2026 | Document · Index |
| Jun 15, 2026 | METC Ramaco Resources, Inc. | 8-K | Regulation FD disclosure· period Jun 15, 2026 | Document · Index |
| Jun 10, 2026 | METC Ramaco Resources, Inc. | 8-K | Shareholder vote results· period Jun 10, 2026 | Document · Index |
| Jun 4, 2026 | CNR Core Natural Resources, Inc. | 8-K | Regulation FD disclosure· period Jun 4, 2026 | Document · Index |
| May 28, 2026 | METC Ramaco Resources, Inc. | 8-K | Regulation FD disclosure· period May 28, 2026 | Document · Index |
| May 19, 2026 | CNR Core Natural Resources, Inc. | 8-K | Mine safety· period May 13, 2026 | Document · Index |
| May 11, 2026 | METC Ramaco Resources, Inc. | 10-Q | Quarterly report· period Mar 31, 2026 | Document · Index |
| May 11, 2026 | METC Ramaco Resources, Inc. | 8-K | Results of operations; Regulation FD disclosure· period May 11, 2026 | Document · Index |
| May 7, 2026 | CNR Core Natural Resources, Inc. | 10-Q | Quarterly report· period Mar 31, 2026 | Document · Index |
| May 7, 2026 | CNR Core Natural Resources, Inc. | 8-K | Results of operations; Regulation FD disclosure· period May 7, 2026 | Document · Index |
Related industries in Mining, Oil and Gas
- Crude Petroleum & Natural Gas (58)
- Gold and Silver Ores (51)
- Metal Mining (26)
- Mining & Quarrying of Nonmetallic Minerals (No Fuels) (15)
- Oil & Gas Field Services, NEC (11)
- Drilling Oil & Gas Wells (11)
- Miscellaneous Metal Ores (6)
- Bituminous Coal & Lignite Surface Mining (3)
- Oil & Gas Field Exploration Services (1)
Source
- U.S. Securities and Exchange Commission, EDGAR company submissions (SIC code and description) and XBRL company facts. The SEC does not endorse OpenFilings.
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