# Relationship history for MSHA mine 0103046

Current hierarchy: **Ashland Inc → Apac Alabama Inc → LINE CREEK PIT**

- 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:** Ashland Inc → LINE CREEK PIT; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Superfos America Inc → LINE CREEK PIT; 1980-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Harry  Curlin → LINE CREEK PIT; 1989-03-01 to 1997-08-28; source msha-controller-operator-history
- **operator_operates_mine:** Mid-State Paving Inc → LINE CREEK PIT; 1995-04-01 to 1997-08-28; source msha-controller-operator-history
- **controller_controls_operator:** Harry  Curlin → Mid-State Paving Inc; 1995-04-01 to 1997-08-28; source msha-controller-operator-history
- **operator_operates_mine:** Couch Construction L P → LINE CREEK PIT; 1997-08-29 to 2000-02-29; source msha-controller-operator-history
- **controller_controls_operator:** Superfos America Inc → Couch Construction L P; 1997-08-29 to 2000-02-29; source msha-controller-operator-history
- **operator_operates_mine:** Apac Alabama Inc → LINE CREEK PIT; 2000-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc → Apac Alabama Inc; 2000-03-01 to current/open; source msha-controller-operator-history