# Relationship history for MSHA mine 1600773

Current hierarchy: **Madden Contracting Company LLC → Madden Gulf Coast, LLC. → Madden Gulf Amite Gravel Crusher**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** T L James & Company Inc → Madden Gulf Amite Gravel Crusher; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** T L James & Company Inc → Madden Gulf Amite Gravel Crusher; 1978-02-02 to 1993-08-12; source msha-controller-operator-history
- **controller_controls_operator:** T L James & Company Inc → T L James & Company Inc; 1978-02-02 to 1993-08-12; source msha-controller-operator-history
- **operator_operates_mine:** Diamond B Construction Co. LLC → Madden Gulf Amite Gravel Crusher; 1993-08-13 to 2021-12-06; source msha-controller-operator-history
- **controller_controls_mine:** Bryan L  Bossier Sr → Madden Gulf Amite Gravel Crusher; 1993-08-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bryan L  Bossier Sr → Diamond B Construction Co. LLC; 1993-08-13 to 2021-12-06; source msha-controller-operator-history
- **operator_operates_mine:** Madden Gulf Coast, LLC. → Madden Gulf Amite Gravel Crusher; 2021-12-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Madden Contracting Company LLC → Madden Gulf Amite Gravel Crusher; 2021-12-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Madden Contracting Company LLC → Madden Gulf Coast, LLC.; 2021-12-07 to current/open; source msha-controller-operator-history