# Relationship history for MSHA mine 4602383

Current hierarchy: **Jeffery Dana C → I V S Inc → No 6a Mine**

- 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 Pocahontas Coal Company → No 6a Mine; 1950-01-01 to 1983-02-23; source msha-controller-operator-history
- **controller_controls_mine:** National Bulk Carriers → No 6a Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** National Bulk Carriers → United Pocahontas Coal Company; 1950-01-01 to 1983-02-23; source msha-controller-operator-history
- **operator_operates_mine:** Rolfe Coal Company Inc → No 6a Mine; 1983-02-24 to 1985-05-09; source msha-controller-operator-history
- **controller_controls_mine:** Curran James D → No 6a Mine; 1983-02-24 to 1985-05-09; source msha-controller-operator-history
- **controller_controls_operator:** Curran James D → Rolfe Coal Company Inc; 1983-02-24 to 1985-05-09; source msha-controller-operator-history
- **operator_operates_mine:** Hope Coal Company Inc → No 6a Mine; 1985-05-10 to 1986-01-31; source msha-controller-operator-history
- **controller_controls_mine:** John F  Hale Jr → No 6a Mine; 1985-05-10 to 1986-01-31; source msha-controller-operator-history
- **controller_controls_operator:** John F  Hale Jr → Hope Coal Company Inc; 1985-05-10 to 1986-01-31; source msha-controller-operator-history
- **operator_operates_mine:** F H & C Coal Inc → No 6a Mine; 1986-02-01 to 1987-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Boyd Jennings → No 6a Mine; 1986-02-01 to 1987-05-19; source msha-controller-operator-history
- **controller_controls_operator:** Boyd Jennings → F H & C Coal Inc; 1986-02-01 to 1987-05-19; source msha-controller-operator-history
- **operator_operates_mine:** West Virginia Ebony Construction Inc → No 6a Mine; 1987-05-20 to 1989-01-08; source msha-controller-operator-history
- **controller_controls_mine:** John F  Hale Jr → No 6a Mine; 1987-05-20 to 1989-01-08; source msha-controller-operator-history
- **controller_controls_operator:** John F  Hale Jr → West Virginia Ebony Construction Inc; 1987-05-20 to 1989-01-08; source msha-controller-operator-history
- **operator_operates_mine:** T & A Coal Company Inc → No 6a Mine; 1989-01-09 to 1989-07-26; source msha-controller-operator-history
- **controller_controls_mine:** Mullins White Jr → No 6a Mine; 1989-01-09 to 1989-07-26; source msha-controller-operator-history
- **controller_controls_operator:** Mullins White Jr → T & A Coal Company Inc; 1989-01-09 to 1989-07-26; source msha-controller-operator-history
- **operator_operates_mine:** H C Industries Inc → No 6a Mine; 1989-07-27 to 1990-12-02; source msha-controller-operator-history
- **controller_controls_mine:** John F  Hale Jr → No 6a Mine; 1989-07-27 to 1990-12-02; source msha-controller-operator-history
- **controller_controls_operator:** John F  Hale Jr → H C Industries Inc; 1989-07-27 to 1990-12-02; source msha-controller-operator-history
- **operator_operates_mine:** S & N Construction Inc → No 6a Mine; 1990-12-03 to 1991-08-27; source msha-controller-operator-history
- **controller_controls_mine:** Bailey Ronnie → No 6a Mine; 1990-12-03 to 1991-08-27; source msha-controller-operator-history
- **controller_controls_operator:** Bailey Ronnie → S & N Construction Inc; 1990-12-03 to 1991-08-27; source msha-controller-operator-history
- **operator_operates_mine:** Pinnacle Creek Development Inc → No 6a Mine; 1991-08-28 to 1993-03-31; source msha-controller-operator-history
- **controller_controls_mine:** John F  Hale Jr → No 6a Mine; 1991-08-28 to 1993-03-31; source msha-controller-operator-history
- **controller_controls_operator:** John F  Hale Jr → Pinnacle Creek Development Inc; 1991-08-28 to 1993-03-31; source msha-controller-operator-history
- **operator_operates_mine:** I V S Inc → No 6a Mine; 1993-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery Dana C Et Al → No 6a Mine; 1993-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery Dana C Et Al → I V S Inc; 1993-04-01 to current/open; source msha-controller-operator-history