# Relationship history for MSHA mine 1510554

Current hierarchy: **Browning Ted R → Eric Mining Incoprorated → #3 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:** Hacker Curtis A → #3 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Garry Coal Company Inc → #3 Mine; 1977-07-01 to 1979-02-07; source msha-controller-operator-history
- **controller_controls_operator:** Hacker Curtis A → Garry Coal Company Inc; 1977-07-01 to 1979-02-07; source msha-controller-operator-history
- **controller_controls_mine:** Gregory Joe Tom → #3 Mine; 1978-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gregory Enterprises Inc → #3 Mine; 1979-02-08 to 1980-01-24; source msha-controller-operator-history
- **controller_controls_operator:** Gregory Joe Tom → Gregory Enterprises Inc; 1979-02-08 to 1980-01-24; source msha-controller-operator-history
- **controller_controls_mine:** Allen Curtis → #3 Mine; 1979-09-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brandy Coal Company → #3 Mine; 1980-01-25 to 1980-08-17; source msha-controller-operator-history
- **controller_controls_mine:** Ison Edward C Et Al → #3 Mine; 1980-01-25 to 1980-08-17; source msha-controller-operator-history
- **controller_controls_operator:** Ison Edward C Et Al → Brandy Coal Company; 1980-01-25 to 1980-08-17; source msha-controller-operator-history
- **operator_operates_mine:** Joel Coal Company Inc → #3 Mine; 1980-08-18 to 1980-11-17; source msha-controller-operator-history
- **controller_controls_operator:** Allen Curtis → Joel Coal Company Inc; 1980-08-18 to 1980-11-17; source msha-controller-operator-history
- **operator_operates_mine:** Gregory Enterprises Inc → #3 Mine; 1980-11-18 to 1981-05-25; source msha-controller-operator-history
- **controller_controls_operator:** Gregory Joe Tom → Gregory Enterprises Inc; 1980-11-18 to 1981-05-25; source msha-controller-operator-history
- **operator_operates_mine:** Sunshine Coal Company → #3 Mine; 1981-05-26 to 1981-07-26; source msha-controller-operator-history
- **controller_controls_mine:** Henson Ronnie Et Al → #3 Mine; 1981-05-26 to 1981-07-26; source msha-controller-operator-history
- **controller_controls_operator:** Henson Ronnie Et Al → Sunshine Coal Company; 1981-05-26 to 1981-07-26; source msha-controller-operator-history
- **operator_operates_mine:** Slusher Brothers & Associates → #3 Mine; 1981-07-27 to 1987-08-24; source msha-controller-operator-history
- **controller_controls_mine:** Slusher Arnold Ray & Ernest → #3 Mine; 1981-07-27 to 1987-08-24; source msha-controller-operator-history
- **controller_controls_operator:** Slusher Arnold Ray & Ernest → Slusher Brothers & Associates; 1981-07-27 to 1987-08-24; source msha-controller-operator-history
- **controller_controls_mine:** Abrol Prem P → #3 Mine; 1987-06-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lucky Star Mining Inc → #3 Mine; 1987-08-25 to 1988-04-07; source msha-controller-operator-history
- **controller_controls_operator:** Abrol Prem P → Lucky Star Mining Inc; 1987-08-25 to 1988-04-07; source msha-controller-operator-history
- **operator_operates_mine:** Lo-Co Coal Corp → #3 Mine; 1988-04-08 to 1989-04-26; source msha-controller-operator-history
- **controller_controls_mine:** Dunsmore Loy (Loyd) Et Al → #3 Mine; 1988-04-08 to 1989-04-26; source msha-controller-operator-history
- **controller_controls_operator:** Dunsmore Loy (Loyd) Et Al → Lo-Co Coal Corp; 1988-04-08 to 1989-04-26; source msha-controller-operator-history
- **controller_controls_mine:** Browning Ted R → #3 Mine; 1988-06-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Eric Mining Incoprorated → #3 Mine; 1989-04-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Browning Ted R → Eric Mining Incoprorated; 1989-04-27 to current/open; source msha-controller-operator-history