# Relationship history for MSHA mine 2002372

Current hierarchy: **Michael  Hollingshead → SRM Materials, LLC → Lake City Pit**

- 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:** Lake City Redi-Mix Inc → Lake City Pit; 1950-01-01 to 2015-06-30; source msha-controller-operator-history
- **controller_controls_mine:** David  Gilde → Lake City Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Gilde → Lake City Redi-Mix Inc; 1950-01-01 to 2015-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Hollingshead et al → Lake City Pit; 2013-12-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** LC Materials → Lake City Pit; 2015-07-01 to 2019-12-05; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Cherry et al → Lake City Pit; 2015-07-01 to 2017-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Cherry et al → LC Materials; 2015-07-01 to 2017-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Cherry et al → Lake City Pit; 2017-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Cherry et al → LC Materials; 2017-09-01 to 2019-12-05; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Cornillie et al → LC Materials; 2017-09-01 to 2019-12-05; source msha-controller-operator-history
- **operator_operates_mine:** SRM Materials, LLC → Lake City Pit; 2019-12-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Hollingshead et al → SRM Materials, LLC; 2019-12-06 to current/open; source msha-controller-operator-history