# Relationship history for MSHA mine 1515669

Current hierarchy: **Brackett Orville → Obeco Mining 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

- **controller_controls_mine:** Osborne Randall → No 1; 1950-01-01 to 1989-10-17; source msha-controller-operator-history
- **controller_controls_mine:** Shelby L  Wilson et al → No 1; 1984-09-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lee W Coal Company Inc → No 1; 1986-06-01 to 1987-02-24; source msha-controller-operator-history
- **controller_controls_operator:** Shelby L  Wilson et al → Lee W Coal Company Inc; 1986-06-01 to 1987-02-24; source msha-controller-operator-history
- **operator_operates_mine:** Rawhide Coal Company Inc → No 1; 1987-02-25 to 1989-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Osborne Mitchell → No 1; 1987-02-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Osborne Mitchell → Rawhide Coal Company Inc; 1987-02-25 to 1989-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Baker Nobe → No 1; 1988-02-01 to 1990-05-03; source msha-controller-operator-history
- **operator_operates_mine:** Osborne Coal Yard Inc → No 1; 1989-07-11 to 1989-10-03; source msha-controller-operator-history
- **controller_controls_operator:** Osborne Randall → Osborne Coal Yard Inc; 1989-07-11 to 1989-10-03; source msha-controller-operator-history
- **operator_operates_mine:** L P N Coal Company Inc → No 1; 1989-10-04 to 1990-01-21; source msha-controller-operator-history
- **controller_controls_mine:** Gilbert Stanley E → No 1; 1989-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gilbert Stanley E → L P N Coal Company Inc; 1989-10-04 to 1990-01-21; source msha-controller-operator-history
- **operator_operates_mine:** Spike Coal Inc → No 1; 1990-01-22 to 1990-05-03; source msha-controller-operator-history
- **controller_controls_operator:** Baker Nobe → Spike Coal Inc; 1990-01-22 to 1990-05-03; source msha-controller-operator-history
- **operator_operates_mine:** Monark Mining Inc → No 1; 1990-05-04 to 1991-05-12; source msha-controller-operator-history
- **controller_controls_mine:** Hendrickson Eddie Et Al → No 1; 1990-05-04 to 1991-05-12; source msha-controller-operator-history
- **controller_controls_operator:** Hendrickson Eddie Et Al → Monark Mining Inc; 1990-05-04 to 1991-05-12; source msha-controller-operator-history
- **controller_controls_mine:** Starns Raymond → No 1; 1991-03-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fossil Fuel Inc → No 1; 1991-05-13 to 1992-04-20; source msha-controller-operator-history
- **controller_controls_operator:** Starns Raymond → Fossil Fuel Inc; 1991-05-13 to 1992-04-20; source msha-controller-operator-history
- **operator_operates_mine:** Obeco Mining Inc → No 1; 1992-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brackett Orville → No 1; 1992-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brackett Orville → Obeco Mining Inc; 1992-04-21 to current/open; source msha-controller-operator-history