# Relationship history for MSHA mine 3503831

Current hierarchy: **Bruce  McGillivray; Marjory  Rattee → Millbank Materials USA → Millbank Materials USA, LTD**

- 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:** Millbank Materials USA → Millbank Materials USA, LTD; 2015-05-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Doug  McGillivray → Millbank Materials USA, LTD; 2015-05-28 to 2020-10-05; source msha-controller-operator-history
- **controller_controls_operator:** Doug  McGillivray → Millbank Materials USA; 2015-05-28 to 2020-10-05; source msha-controller-operator-history
- **controller_controls_mine:** Estate of Douglas G. McGillivray → Millbank Materials USA, LTD; 2020-10-06 to 2023-09-20; source msha-controller-operator-history
- **controller_controls_operator:** Estate of Douglas G. McGillivray → Millbank Materials USA; 2020-10-06 to 2023-09-20; source msha-controller-operator-history
- **controller_controls_mine:** Marjory  Rattee et al → Millbank Materials USA, LTD; 2023-09-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marjory  Rattee et al → Millbank Materials USA; 2023-09-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bruce  McGillivray et al → Millbank Materials USA; 2023-09-21 to current/open; source msha-controller-operator-history