# Relationship history for MSHA mine 4201881

Current hierarchy: **Bolinder Resources ESOP and Trust → Bolinder Resources LLC → Portable Crusher #2 (P-450)**

- 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:** Bolinder Companies Inc → Portable Crusher #2 (P-450); 1984-05-01 to 2020-08-18; source msha-controller-operator-history
- **controller_controls_mine:** Garry L  Bolinder → Portable Crusher #2 (P-450); 1984-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Garry L  Bolinder → Bolinder Companies Inc; 1984-05-01 to 2020-08-18; source msha-controller-operator-history
- **controller_controls_mine:** Stacey  Bolinder → Portable Crusher #2 (P-450); 2009-07-14 to 2012-12-29; source msha-controller-operator-history
- **controller_controls_mine:** Garry L  Bolinder et al → Portable Crusher #2 (P-450); 2012-12-30 to 2024-06-03; source msha-controller-operator-history
- **operator_operates_mine:** Bolinder Resources LLC → Portable Crusher #2 (P-450); 2020-08-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stacey  Bolinder → Bolinder Resources LLC; 2020-08-19 to 2012-12-29; source msha-controller-operator-history
- **controller_controls_operator:** Garry L  Bolinder et al → Bolinder Resources LLC; 2020-08-19 to 2024-06-03; source msha-controller-operator-history
- **controller_controls_operator:** Stacey P  Bolinder et al → Bolinder Resources LLC; 2020-08-19 to 2024-06-03; source msha-controller-operator-history
- **controller_controls_mine:** Bolinder Resources ESOP and Trust et al → Portable Crusher #2 (P-450); 2024-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bolinder Resources ESOP and Trust et al → Bolinder Resources LLC; 2024-06-04 to current/open; source msha-controller-operator-history