# Relationship history for MSHA mine 1601312

Current hierarchy: **Richard N  Weeks; Richard S  Weeks → Weeks Marine Inc → BTD-2 C/O Chuck Granger**

- 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:** T L James & Company Inc → BTD-2 C/O Chuck Granger; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** T L James & Company Inc → BTD-2 C/O Chuck Granger; 1996-11-01 to 1998-08-31; source msha-controller-operator-history
- **controller_controls_operator:** T L James & Company Inc → T L James & Company Inc; 1996-11-01 to 1998-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Weeks Marine Inc → BTD-2 C/O Chuck Granger; 1998-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard N  Weeks et al → BTD-2 C/O Chuck Granger; 1998-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard N  Weeks et al → Weeks Marine Inc; 1998-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard S  Weeks et al → Weeks Marine Inc; 1998-09-01 to current/open; source msha-controller-operator-history