# Relationship history for MSHA mine 1103096

Current hierarchy: **John  Tarble; Jerald  Tarble → Casey Stone Company → Casey Stone Co**

- 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:** Casey Stone Co → Casey Stone Co; 2001-09-19 to 2019-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Charles  Heuerman et al → Casey Stone Co; 2001-09-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Heuerman et al → Casey Stone Co; 2001-09-19 to 2019-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Casey Stone Company → Casey Stone Co; 2020-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  Tarble et al → Casey Stone Co; 2020-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Tarble et al → Casey Stone Company; 2020-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerald  Tarble et al → Casey Stone Company; 2020-01-01 to current/open; source msha-controller-operator-history