# Relationship history for MSHA mine 1508906

Current hierarchy: **Farley James E → J J Coal Company Inc → No 1**

- 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:** Aztec Mining Company → No 1; 1975-08-01 to 1977-05-17; source msha-controller-operator-history
- **controller_controls_mine:** Nuclear Dynamics Resources Inc → No 1; 1975-08-01 to 1985-06-27; source msha-controller-operator-history
- **controller_controls_operator:** Nuclear Dynamics Resources Inc → Aztec Mining Company; 1975-08-01 to 1977-05-17; source msha-controller-operator-history
- **operator_operates_mine:** H & O Mining Company Inc → No 1; 1977-05-18 to 1978-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Hamilton Hollie → No 1; 1977-05-18 to 1978-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Hamilton Hollie → H & O Mining Company Inc; 1977-05-18 to 1978-10-31; source msha-controller-operator-history
- **operator_operates_mine:** H & O Mining Company Inc → No 1; 1978-11-01 to 1979-07-17; source msha-controller-operator-history
- **controller_controls_mine:** Justice Robert B → No 1; 1978-11-01 to 1979-07-17; source msha-controller-operator-history
- **controller_controls_operator:** Justice Robert B → H & O Mining Company Inc; 1978-11-01 to 1979-07-17; source msha-controller-operator-history
- **operator_operates_mine:** Wayne Clark Inc → No 1; 1979-07-18 to 1984-05-13; source msha-controller-operator-history
- **controller_controls_mine:** Clark Wayne W & Jack Bush → No 1; 1979-07-18 to 1984-05-13; source msha-controller-operator-history
- **controller_controls_operator:** Clark Wayne W & Jack Bush → Wayne Clark Inc; 1979-07-18 to 1984-05-13; source msha-controller-operator-history
- **controller_controls_mine:** Scalf Wallace → No 1; 1984-02-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Circle J Coal Company Inc → No 1; 1984-05-14 to 1984-09-23; source msha-controller-operator-history
- **controller_controls_operator:** Scalf Wallace → Circle J Coal Company Inc; 1984-05-14 to 1984-09-23; source msha-controller-operator-history
- **controller_controls_mine:** Jerry  Tackett → No 1; 1984-05-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & R Coal Corp → No 1; 1984-09-24 to 1986-05-22; source msha-controller-operator-history
- **controller_controls_mine:** Robinson Rodney → No 1; 1984-09-24 to 1986-05-22; source msha-controller-operator-history
- **controller_controls_operator:** Robinson Rodney → C & R Coal Corp; 1984-09-24 to 1986-05-22; source msha-controller-operator-history
- **controller_controls_mine:** Boyd C Douglas & Randal Conn → No 1; 1985-04-01 to 1986-09-15; source msha-controller-operator-history
- **operator_operates_mine:** Fiesta Coal Company Inc → No 1; 1986-05-23 to 1986-09-15; source msha-controller-operator-history
- **controller_controls_operator:** Boyd C Douglas & Randal Conn → Fiesta Coal Company Inc; 1986-05-23 to 1986-09-15; source msha-controller-operator-history
- **operator_operates_mine:** Shawn Lee Coal Company Inc → No 1; 1986-09-16 to 1987-01-07; source msha-controller-operator-history
- **controller_controls_mine:** Boyd C Douglas → No 1; 1986-09-16 to 1987-01-07; source msha-controller-operator-history
- **controller_controls_operator:** Boyd C Douglas → Shawn Lee Coal Company Inc; 1986-09-16 to 1987-01-07; source msha-controller-operator-history
- **operator_operates_mine:** Tackett Mining Company Inc → No 1; 1987-01-08 to 1987-06-04; source msha-controller-operator-history
- **controller_controls_operator:** Jerry  Tackett → Tackett Mining Company Inc; 1987-01-08 to 1987-06-04; source msha-controller-operator-history
- **operator_operates_mine:** Amar Inc → No 1; 1987-06-05 to 1987-08-27; source msha-controller-operator-history
- **controller_controls_mine:** Douglas  Sayers → No 1; 1987-06-05 to 1987-08-27; source msha-controller-operator-history
- **controller_controls_operator:** Douglas  Sayers → Amar Inc; 1987-06-05 to 1987-08-27; source msha-controller-operator-history
- **operator_operates_mine:** Amar Inc → No 1; 1987-08-28 to 1987-12-22; source msha-controller-operator-history
- **controller_controls_mine:** Sullivan Darius L & James R → No 1; 1987-08-28 to 1987-12-22; source msha-controller-operator-history
- **controller_controls_operator:** Sullivan Darius L & James R → Amar Inc; 1987-08-28 to 1987-12-22; source msha-controller-operator-history
- **operator_operates_mine:** Amar Inc → No 1; 1987-12-23 to 1988-08-15; source msha-controller-operator-history
- **controller_controls_mine:** Chasteen Nicklous → No 1; 1987-12-23 to 1988-08-15; source msha-controller-operator-history
- **controller_controls_operator:** Chasteen Nicklous → Amar Inc; 1987-12-23 to 1988-08-15; source msha-controller-operator-history
- **operator_operates_mine:** J J Coal Company Inc → No 1; 1988-08-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Farley James E → No 1; 1988-08-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Farley James E → J J Coal Company Inc; 1988-08-16 to current/open; source msha-controller-operator-history