# Relationship history for MSHA mine 1510989

Current hierarchy: **Preece Kelly → Mentor Mining Inc → No S-2 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

- **controller_controls_mine:** James W  Potter et al → No S-2 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Blair Ernest → No S-2 Mine; 1977-02-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Potter Mining Company Inc → No S-2 Mine; 1977-12-01 to 1983-03-22; source msha-controller-operator-history
- **controller_controls_operator:** James W  Potter et al → Potter Mining Company Inc; 1977-12-01 to 1983-03-22; source msha-controller-operator-history
- **controller_controls_mine:** Prater Betty → No S-2 Mine; 1981-03-25 to 1988-03-27; source msha-controller-operator-history
- **operator_operates_mine:** D M & L Coal Company Inc → No S-2 Mine; 1983-03-23 to 1983-10-06; source msha-controller-operator-history
- **controller_controls_mine:** Mc Coy Hobert & Verlin → No S-2 Mine; 1983-03-23 to 1985-01-30; source msha-controller-operator-history
- **controller_controls_operator:** Mc Coy Hobert & Verlin → D M & L Coal Company Inc; 1983-03-23 to 1983-10-06; source msha-controller-operator-history
- **operator_operates_mine:** Blair Coal Company Inc → No S-2 Mine; 1983-10-07 to 1984-08-22; source msha-controller-operator-history
- **controller_controls_operator:** Blair Ernest → Blair Coal Company Inc; 1983-10-07 to 1984-08-22; source msha-controller-operator-history
- **operator_operates_mine:** V & R Coal Company Inc → No S-2 Mine; 1984-08-23 to 1985-01-21; source msha-controller-operator-history
- **controller_controls_mine:** Yates Vern → No S-2 Mine; 1984-08-23 to 1986-08-21; source msha-controller-operator-history
- **controller_controls_operator:** Yates Vern → V & R Coal Company Inc; 1984-08-23 to 1985-01-21; source msha-controller-operator-history
- **operator_operates_mine:** Mack Coal Corp → No S-2 Mine; 1985-01-22 to 1986-06-22; source msha-controller-operator-history
- **controller_controls_operator:** Prater Betty → Mack Coal Corp; 1985-01-22 to 1986-06-22; source msha-controller-operator-history
- **operator_operates_mine:** Mullins Mining Inc → No S-2 Mine; 1986-06-23 to 1986-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Mullins Harold → No S-2 Mine; 1986-06-23 to 1986-10-13; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Harold → Mullins Mining Inc; 1986-06-23 to 1986-10-13; source msha-controller-operator-history
- **operator_operates_mine:** Lucky Lady Coal Company Inc → No S-2 Mine; 1986-10-14 to 1987-02-22; source msha-controller-operator-history
- **controller_controls_mine:** Roberts Fred → No S-2 Mine; 1986-10-14 to 1987-02-22; source msha-controller-operator-history
- **controller_controls_operator:** Roberts Fred → Lucky Lady Coal Company Inc; 1986-10-14 to 1987-02-22; source msha-controller-operator-history
- **controller_controls_mine:** Lester James E → No S-2 Mine; 1987-02-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hall-Cole Inc → No S-2 Mine; 1987-02-23 to 1987-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Hall Vernon → No S-2 Mine; 1987-02-23 to 1987-08-27; source msha-controller-operator-history
- **controller_controls_operator:** Hall Vernon → Hall-Cole Inc; 1987-02-23 to 1987-06-29; source msha-controller-operator-history
- **operator_operates_mine:** C & D Mining Company Inc → No S-2 Mine; 1987-06-30 to 1987-11-08; source msha-controller-operator-history
- **controller_controls_mine:** Dye James Harry → No S-2 Mine; 1987-06-30 to 1987-11-08; source msha-controller-operator-history
- **controller_controls_operator:** Dye James Harry → C & D Mining Company Inc; 1987-06-30 to 1987-11-08; source msha-controller-operator-history
- **operator_operates_mine:** Hopefull Coal Company → No S-2 Mine; 1987-11-09 to 1988-03-30; source msha-controller-operator-history
- **controller_controls_operator:** Lester James E → Hopefull Coal Company; 1987-11-09 to 1988-03-30; source msha-controller-operator-history
- **operator_operates_mine:** Brute Coal Company → No S-2 Mine; 1988-03-31 to 1988-11-03; source msha-controller-operator-history
- **controller_controls_mine:** Stacy Curtis-Harold Ramey Et Al → No S-2 Mine; 1988-03-31 to 1988-11-03; source msha-controller-operator-history
- **controller_controls_operator:** Stacy Curtis-Harold Ramey Et Al → Brute Coal Company; 1988-03-31 to 1988-11-03; source msha-controller-operator-history
- **operator_operates_mine:** Potter Mining Company Inc → No S-2 Mine; 1988-11-04 to 1989-04-17; source msha-controller-operator-history
- **controller_controls_mine:** David W  Potter et al → No S-2 Mine; 1988-11-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David W  Potter et al → Potter Mining Company Inc; 1988-11-04 to 1989-04-17; source msha-controller-operator-history
- **controller_controls_operator:** Derek  Potter et al → Potter Mining Company Inc; 1988-11-04 to 1989-04-17; source msha-controller-operator-history
- **controller_controls_mine:** Preece Kelly → No S-2 Mine; 1989-01-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mentor Mining Inc → No S-2 Mine; 1989-04-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Preece Kelly → Mentor Mining Inc; 1989-04-18 to current/open; source msha-controller-operator-history