# Relationship history for MSHA mine 4003354

Current hierarchy: **Leigh Ann Bullington; Ray  Bullington; Ron  Newcomb; Rob  Bullington → Bedrock Quarry and Gravel → Bedrock Quarry and Gravel**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Charles R  Smith → Bedrock Quarry and Gravel; 2008-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tennessee Materials, Corp. → Bedrock Quarry and Gravel; 2009-08-05 to 2012-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Charles R  Smith → Tennessee Materials, Corp.; 2009-08-05 to 2012-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Horse Creek Rock Inc. → Bedrock Quarry and Gravel; 2012-05-01 to 2024-10-06; source msha-controller-operator-history
- **controller_controls_mine:** Seth Jonathan  Smith → Bedrock Quarry and Gravel; 2012-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Seth Jonathan  Smith → Horse Creek Rock Inc.; 2012-05-01 to 2024-10-06; source msha-controller-operator-history
- **operator_operates_mine:** Bedrock Quarry and Gravel → Bedrock Quarry and Gravel; 2024-10-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Benjamin  Burcham → Bedrock Quarry and Gravel; 2024-10-07 to 2025-03-25; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin  Burcham → Bedrock Quarry and Gravel; 2024-10-07 to 2025-03-25; source msha-controller-operator-history
- **controller_controls_mine:** Melanie  Burcham → Bedrock Quarry and Gravel; 2025-03-26 to 2026-02-12; source msha-controller-operator-history
- **controller_controls_operator:** Melanie  Burcham → Bedrock Quarry and Gravel; 2025-03-26 to 2026-02-12; source msha-controller-operator-history
- **controller_controls_mine:** Rob  Bullington et al → Bedrock Quarry and Gravel; 2026-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rob  Bullington et al → Bedrock Quarry and Gravel; 2026-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ron  Newcomb et al → Bedrock Quarry and Gravel; 2026-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ray  Bullington et al → Bedrock Quarry and Gravel; 2026-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Leigh Ann Bullington et al → Bedrock Quarry and Gravel; 2026-02-13 to current/open; source msha-controller-operator-history