# Relationship history for MSHA mine 0404602

Current hierarchy: **Garrett  Petelski; Thomas  Hrubik → Global Pumice, LLC → Makayla**

- 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:** Cal Pumice Inc → Makayla; 1982-07-01 to 1985-12-14; source msha-controller-operator-history
- **controller_controls_mine:** Edward  Scharf → Makayla; 1982-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward  Scharf → Cal Pumice Inc; 1982-07-01 to 1985-12-14; source msha-controller-operator-history
- **operator_operates_mine:** California Lightweight Partnership → Makayla; 1985-12-15 to 1987-07-12; source msha-controller-operator-history
- **controller_controls_mine:** Ca Lightweight Products Inc  et al → Makayla; 1985-12-15 to 1987-07-12; source msha-controller-operator-history
- **controller_controls_operator:** Ca Lightweight Products Inc  et al → California Lightweight Partnership; 1985-12-15 to 1987-07-12; source msha-controller-operator-history
- **operator_operates_mine:** California Lightweight Pumice Inc → Makayla; 1987-07-13 to 2014-10-08; source msha-controller-operator-history
- **controller_controls_mine:** L Kenneth  Teel → Makayla; 1987-07-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** L Kenneth  Teel → California Lightweight Pumice Inc; 1987-07-13 to 2014-10-08; source msha-controller-operator-history
- **controller_controls_mine:** Thomas  Hrubik et al → Makayla; 2014-02-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Global Pumice, LLC → Makayla; 2014-10-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas  Hrubik et al → Global Pumice, LLC; 2014-10-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Garrett  Petelski et al → Global Pumice, LLC; 2014-10-09 to current/open; source msha-controller-operator-history