# Relationship history for MSHA mine 3503697

Current hierarchy: **Brenda  Land; Sid J  Greehey → BP Gold Resources Inc → Mormon Basin**

- 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:** BP Gold Resources Inc → Mormon Basin; 2008-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brenda  Land  et al → Mormon Basin; 2008-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brenda  Land  et al → BP Gold Resources Inc; 2008-04-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sid J  Greehey  et al → BP Gold Resources Inc; 2008-04-08 to current/open; source msha-controller-operator-history