# Relationship history for MSHA mine 3503403

Current hierarchy: **David L  Jeffries → Sundance Rock Corp → Sundance Rock**

- 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

- **controller_controls_mine:** Agnes M  Peterson → Sundance Rock; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tide Creek Rock Inc → Sundance Rock; 1994-01-01 to 1997-06-10; source msha-controller-operator-history
- **controller_controls_operator:** Agnes M  Peterson → Tide Creek Rock Inc; 1994-01-01 to 1997-06-10; source msha-controller-operator-history
- **operator_operates_mine:** Sundance Rock Corp → Sundance Rock; 1997-06-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David L  Jeffries → Sundance Rock; 1997-06-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David L  Jeffries → Sundance Rock Corp; 1997-06-11 to current/open; source msha-controller-operator-history