# Relationship history for MSHA mine 3608148

Current hierarchy: **Jonathan  Byler → Byler Quarries LLC → Fiddler's Elbow South 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

- **operator_operates_mine:** Adams County Asphalt Company → Fiddler's Elbow South Quarry; 1990-02-01 to 1995-08-15; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Mumma II → Fiddler's Elbow South Quarry; 1990-02-01 to 1995-08-15; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Mumma II → Adams County Asphalt Company; 1990-02-01 to 1995-08-15; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Fiddler's Elbow South Quarry; 1993-07-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pennsy Supply Inc → Fiddler's Elbow South Quarry; 1995-08-16 to 2020-12-03; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Pennsy Supply Inc; 1995-08-16 to 2020-12-03; source msha-controller-operator-history
- **operator_operates_mine:** Byler Quarries LLC → Fiddler's Elbow South Quarry; 2020-12-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jonathan  Byler → Fiddler's Elbow South Quarry; 2020-12-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jonathan  Byler → Byler Quarries LLC; 2020-12-04 to current/open; source msha-controller-operator-history