# Relationship history for MSHA mine 2302324

Current hierarchy: **Martin Marietta Materials Inc → Martin Marietta Materials, Inc. → Troy West 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:** Martin Marietta Materials Inc → Troy West Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tri County Quarry → Troy West Quarry; 2005-08-05 to 2010-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Steiniger et al → Troy West Quarry; 2005-08-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Steiniger et al → Tri County Quarry; 2005-08-05 to 2010-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Foresight Development et al → Tri County Quarry; 2005-08-05 to 2010-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Bedrock Quarry LLC → Troy West Quarry; 2011-01-01 to 2025-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Joe  Rivet et al → Troy West Quarry; 2011-01-01 to 2020-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Rivet et al → Bedrock Quarry LLC; 2011-01-01 to 2020-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Steiniger et al → Bedrock Quarry LLC; 2011-01-01 to 2020-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Steiniger et al → Troy West Quarry; 2021-01-01 to 2024-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Steiniger et al → Bedrock Quarry LLC; 2021-01-01 to 2024-04-30; source msha-controller-operator-history
- **controller_controls_operator:** John  Follmer et al → Bedrock Quarry LLC; 2021-01-01 to 2024-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Vincent  Scognamiglio et al → Bedrock Quarry LLC; 2021-01-01 to 2024-04-30; source msha-controller-operator-history
- **controller_controls_mine:** RWNIH-OP Holdings LLC et al → Troy West Quarry; 2021-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Steiniger → Troy West Quarry; 2024-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Steiniger → Bedrock Quarry LLC; 2024-05-01 to 2025-06-30; source msha-controller-operator-history
- **operator_operates_mine:** New Frontier Materials Beta, LLC → Troy West Quarry; 2025-07-01 to 2026-06-14; source msha-controller-operator-history
- **controller_controls_operator:** RWNIH-OP Holdings LLC et al → New Frontier Materials Beta, LLC; 2025-07-01 to 2026-06-14; source msha-controller-operator-history
- **controller_controls_operator:** 42 North Resources Partners II LP et al → New Frontier Materials Beta, LLC; 2025-07-01 to 2026-06-14; source msha-controller-operator-history
- **controller_controls_operator:** PEPI Capital, L.P. et al → New Frontier Materials Beta, LLC; 2025-07-01 to 2026-06-14; source msha-controller-operator-history
- **operator_operates_mine:** Martin Marietta Materials, Inc. → Troy West Quarry; 2026-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martin Marietta Materials Inc → Martin Marietta Materials, Inc.; 2026-06-15 to current/open; source msha-controller-operator-history