# Relationship history for MSHA mine 0801209

Current hierarchy: **Abcot Clay Sand & Gravel Inc → Cds/Abcot → PIT 46""**

- 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:** Dale A  De Witt → PIT 46""; 1989-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** De Witt Excavating Inc → PIT 46""; 1993-02-01 to 1994-11-06; source msha-controller-operator-history
- **controller_controls_operator:** Dale A  De Witt → De Witt Excavating Inc; 1993-02-01 to 1994-11-06; source msha-controller-operator-history
- **operator_operates_mine:** Cds/Abcot → PIT 46""; 1994-11-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Abcot Clay Sand & Gravel Inc → PIT 46""; 1994-11-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Abcot Clay Sand & Gravel Inc → Cds/Abcot; 1994-11-07 to current/open; source msha-controller-operator-history