# Relationship history for MSHA mine 4003350

Current hierarchy: **Michael  Rector; John  Rector → BMJ Stone Company, LLC → Brown Town Quarry**

- 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:** John  Rector  et al → Brown Town Quarry; 2009-03-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** JM Shaffer Quarries → Brown Town Quarry; 2009-04-29 to 2014-11-23; source msha-controller-operator-history
- **controller_controls_mine:** David S  Shaffer → Brown Town Quarry; 2009-04-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David S  Shaffer → JM Shaffer Quarries; 2009-04-29 to 2014-11-23; source msha-controller-operator-history
- **controller_controls_mine:** James  Kirkland Jr → Brown Town Quarry; 2014-04-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J & B Stone → Brown Town Quarry; 2014-11-24 to 2020-07-22; source msha-controller-operator-history
- **controller_controls_operator:** James  Kirkland Jr → J & B Stone; 2014-11-24 to 2020-07-22; source msha-controller-operator-history
- **operator_operates_mine:** BMJ Stone Company, LLC → Brown Town Quarry; 2020-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Rector  et al → BMJ Stone Company, LLC; 2020-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Rector  et al → BMJ Stone Company, LLC; 2020-07-23 to current/open; source msha-controller-operator-history