# Relationship history for MSHA mine 1101558

Current hierarchy: **T & T Oil Company Inc; Shakespeare Oil Company Inc → Shawnee Stone, LLC → Buncombe Plant**

- 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:** Southern Illinois Stone Company → Buncombe Plant; 1950-01-01 to 1993-03-29; source msha-controller-operator-history
- **controller_controls_mine:** Southern Illinois Stone Company → Buncombe Plant; 1950-01-01 to 1993-03-29; source msha-controller-operator-history
- **controller_controls_operator:** Southern Illinois Stone Company → Southern Illinois Stone Company; 1950-01-01 to 1993-03-29; source msha-controller-operator-history
- **operator_operates_mine:** Southern Illinois Stone Company → Buncombe Plant; 1993-03-30 to 2023-01-17; source msha-controller-operator-history
- **controller_controls_mine:** Colas S A → Buncombe Plant; 1993-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Colas S A → Southern Illinois Stone Company; 1993-03-30 to 2023-01-17; source msha-controller-operator-history
- **controller_controls_mine:** T & T Oil Company Inc et al → Buncombe Plant; 2007-05-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Shawnee Stone, LLC → Buncombe Plant; 2023-01-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** T & T Oil Company Inc et al → Shawnee Stone, LLC; 2023-01-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shakespeare Oil Company Inc et al → Shawnee Stone, LLC; 2023-01-18 to current/open; source msha-controller-operator-history