# Relationship history for MSHA mine 2301241

Current hierarchy: **Gary L  Bullock → Dillon Clay Mining Company → Dillon Storage Shed**

- 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:** Emmett Dillon → Dillon Storage Shed; 1950-01-01 to 1979-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Emmett  Dillon → Dillon Storage Shed; 1950-01-01 to 1979-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Emmett  Dillon → Emmett Dillon; 1950-01-01 to 1979-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Dillon Clay Mining Company → Dillon Storage Shed; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gary L  Bullock et al → Dillon Storage Shed; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary L  Bullock et al → Dillon Clay Mining Company; 1980-01-01 to current/open; source msha-controller-operator-history