# Relationship history for MSHA mine 4003051

Current hierarchy: **RemSom, LLC → USB Tennessee, LLC → Collins and Rich Pits**

- 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:** Boral Limited → Collins and Rich Pits; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tony  Grooms → Collins and Rich Pits; 1987-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tony Grooms Construction Company → Collins and Rich Pits; 1991-12-01 to 2000-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Tony  Grooms → Tony Grooms Construction Company; 1991-12-01 to 2000-07-19; source msha-controller-operator-history
- **operator_operates_mine:** Boral Bricks Inc → Collins and Rich Pits; 2000-07-20 to 2017-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Boral Limited → Boral Bricks Inc; 2000-07-20 to 2017-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Meridian Brick LLC → Collins and Rich Pits; 2017-04-01 to 2021-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Lone Star Funds Inc et al → Collins and Rich Pits; 2017-04-01 to 2021-10-17; source msha-controller-operator-history
- **controller_controls_operator:** Lone Star Funds Inc et al → Meridian Brick LLC; 2017-04-01 to 2021-10-17; source msha-controller-operator-history
- **controller_controls_operator:** Boral Industries Inc et al → Meridian Brick LLC; 2017-04-01 to 2021-10-17; source msha-controller-operator-history
- **controller_controls_mine:** Wienerberger AG → Collins and Rich Pits; 2021-10-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wienerberger AG → Meridian Brick LLC; 2021-10-18 to 2021-11-15; source msha-controller-operator-history
- **operator_operates_mine:** USB Tennessee, LLC → Collins and Rich Pits; 2021-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** RemSom, LLC → Collins and Rich Pits; 2021-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** RemSom, LLC → USB Tennessee, LLC; 2021-11-16 to current/open; source msha-controller-operator-history