# Relationship history for MSHA mine 1502134

Current hierarchy: **Arq Inc → Arq Corbin, LLC → Corbin Project, LLC**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** United States Steel Mining Company Inc → Corbin Project, LLC; 1950-01-01 to 1984-10-24; source msha-controller-operator-history
- **controller_controls_mine:** Usx Corp → Corbin Project, LLC; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Usx Corp → United States Steel Mining Company Inc; 1950-01-01 to 1984-10-24; source msha-controller-operator-history
- **controller_controls_mine:** Ashland Inc et al → Corbin Project, LLC; 1984-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Arch Of Kentucky → Corbin Project, LLC; 1984-10-25 to 1996-06-05; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc et al → Arch Of Kentucky; 1984-10-25 to 1996-06-05; source msha-controller-operator-history
- **operator_operates_mine:** C H Development → Corbin Project, LLC; 1996-06-06 to 1998-03-10; source msha-controller-operator-history
- **controller_controls_mine:** Jim  Hall et al → Corbin Project, LLC; 1996-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jim  Hall et al → C H Development; 1996-06-06 to 1998-03-10; source msha-controller-operator-history
- **controller_controls_operator:** Curtis  Corey et al → C H Development; 1996-06-06 to 1998-03-10; source msha-controller-operator-history
- **operator_operates_mine:** Crc No 6 Llc → Corbin Project, LLC; 1998-03-11 to 1998-06-16; source msha-controller-operator-history
- **controller_controls_mine:** Mcnic Pipeline & Processing Company & Earthco → Corbin Project, LLC; 1998-03-11 to 2000-07-06; source msha-controller-operator-history
- **controller_controls_operator:** Mcnic Pipeline & Processing Company & Earthco → Crc No 6 Llc; 1998-03-11 to 1998-06-16; source msha-controller-operator-history
- **controller_controls_mine:** Beard Company → Corbin Project, LLC; 1998-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Beard Technologies Inc → Corbin Project, LLC; 1998-06-17 to 1999-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Beard Company → Beard Technologies Inc; 1998-06-17 to 1999-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Crc No 6 Llc → Corbin Project, LLC; 1999-05-01 to 2000-07-06; source msha-controller-operator-history
- **controller_controls_operator:** Mcnic Pipeline & Processing Company & Earthco → Crc No 6 Llc; 1999-05-01 to 2000-07-06; source msha-controller-operator-history
- **operator_operates_mine:** C H Development → Corbin Project, LLC; 2000-07-07 to 2013-07-07; source msha-controller-operator-history
- **controller_controls_operator:** Curtis  Corey et al → C H Development; 2000-07-07 to 2013-07-07; source msha-controller-operator-history
- **controller_controls_operator:** Jim  Hall et al → C H Development; 2000-07-07 to 2013-07-07; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Rickmeier et al → Corbin Project, LLC; 2013-01-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** BRC Alabama No. 3, LLC → Corbin Project, LLC; 2013-07-08 to 2016-02-21; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Rickmeier et al → BRC Alabama No. 3, LLC; 2013-07-08 to 2016-02-21; source msha-controller-operator-history
- **operator_operates_mine:** Arq Corbin, LLC → Corbin Project, LLC; 2016-02-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Arq Limited → Corbin Project, LLC; 2016-02-22 to 2023-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Arq Limited → Arq Corbin, LLC; 2016-02-22 to 2023-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Arq Inc → Corbin Project, LLC; 2023-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arq Inc → Arq Corbin, LLC; 2023-02-01 to current/open; source msha-controller-operator-history