# Relationship history for MSHA mine 4404534

Current hierarchy: **James C  Justice III → A&G Coal Corporation → Prep Plant #2**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Barber Oil Corp → Prep Plant #2; 1976-09-21 to 1981-04-29; source msha-controller-operator-history
- **operator_operates_mine:** Paramont Mining Corp → Prep Plant #2; 1976-10-01 to 1981-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Barber Oil Corp → Paramont Mining Corp; 1976-10-01 to 1981-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Paramont Coal Corp → Prep Plant #2; 1981-04-01 to 1986-07-08; source msha-controller-operator-history
- **controller_controls_mine:** W R Grace Company et al → Prep Plant #2; 1981-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** W R Grace Company et al → Paramont Coal Corp; 1981-04-01 to 1986-07-08; source msha-controller-operator-history
- **controller_controls_operator:** M A Hanna Company et al → Paramont Coal Corp; 1981-04-01 to 1986-07-08; source msha-controller-operator-history
- **controller_controls_mine:** Pittston Company → Prep Plant #2; 1986-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Paramont Coal Corp → Prep Plant #2; 1986-07-09 to 2002-12-12; source msha-controller-operator-history
- **controller_controls_operator:** Pittston Company → Paramont Coal Corp; 1986-07-09 to 2002-12-12; source msha-controller-operator-history
- **controller_controls_mine:** Jerry W  Wharton → Prep Plant #2; 1990-09-01 to 2009-04-29; source msha-controller-operator-history
- **operator_operates_mine:** Paramont Coal Company Virginia, LLC → Prep Plant #2; 2002-12-13 to 2010-05-16; source msha-controller-operator-history
- **controller_controls_mine:** Alpha Natural Resources, Inc. → Prep Plant #2; 2002-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alpha Natural Resources, Inc. → Paramont Coal Company Virginia, LLC; 2002-12-13 to 2010-05-16; source msha-controller-operator-history
- **controller_controls_mine:** James C  Justice II et al → Prep Plant #2; 2009-04-30 to 2017-03-26; source msha-controller-operator-history
- **operator_operates_mine:** A&G Coal Corporation → Prep Plant #2; 2010-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry W  Wharton → A&G Coal Corporation; 2010-05-17 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_operator:** James C  Justice II et al → A&G Coal Corporation; 2010-05-17 to 2017-03-26; source msha-controller-operator-history
- **controller_controls_mine:** Jillean L  Justice et al → Prep Plant #2; 2017-03-27 to 2022-10-02; source msha-controller-operator-history
- **controller_controls_operator:** Jillean L  Justice et al → A&G Coal Corporation; 2017-03-27 to 2022-10-02; source msha-controller-operator-history
- **controller_controls_operator:** James C  Justice lll et al → A&G Coal Corporation; 2017-03-27 to 2022-10-02; source msha-controller-operator-history
- **controller_controls_mine:** James C  Justice III → Prep Plant #2; 2022-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James C  Justice III → A&G Coal Corporation; 2022-10-03 to current/open; source msha-controller-operator-history