# Relationship history for MSHA mine 4003085

Current hierarchy: **Albert  Pope; Jeff  Pope → Jackson Sand → Jackson Sand**

- 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:** Jackson Sand Company L P → Jackson Sand; 1995-05-01 to 1996-06-03; source msha-controller-operator-history
- **controller_controls_mine:** Freddie  Hill et al → Jackson Sand; 1995-05-01 to 1996-06-03; source msha-controller-operator-history
- **controller_controls_operator:** Freddie  Hill et al → Jackson Sand Company L P; 1995-05-01 to 1996-06-03; source msha-controller-operator-history
- **operator_operates_mine:** Jackson Sand → Jackson Sand; 1996-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Albert  Pope et al → Jackson Sand; 1996-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Albert  Pope et al → Jackson Sand; 1996-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Pope et al → Jackson Sand; 1996-06-04 to current/open; source msha-controller-operator-history