# Relationship history for MSHA mine 4801393

Current hierarchy: **AVCO Holdings LLC → Avail Valley Construction-WY, LLC → Avail Valley Construction**

- 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:** John L  Fiddler  et al → Avail Valley Construction; 1950-01-01 to 1992-08-11; source msha-controller-operator-history
- **operator_operates_mine:** Fidler Inc → Avail Valley Construction; 1983-08-01 to 1989-05-22; source msha-controller-operator-history
- **controller_controls_operator:** John L  Fiddler  et al → Fidler Inc; 1983-08-01 to 1989-05-22; source msha-controller-operator-history
- **operator_operates_mine:** Fidler Inc → Avail Valley Construction; 1989-05-23 to 1995-06-18; source msha-controller-operator-history
- **controller_controls_mine:** Aggregate Industries PLC → Avail Valley Construction; 1989-05-23 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_operator:** Aggregate Industries PLC → Fidler Inc; 1989-05-23 to 1995-06-18; source msha-controller-operator-history
- **controller_controls_mine:** Nova Materials Inc → Avail Valley Construction; 1995-06-12 to 2000-02-29; source msha-controller-operator-history
- **operator_operates_mine:** Fidler Inc → Avail Valley Construction; 1995-06-19 to 1998-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Nova Materials Inc → Fidler Inc; 1995-06-19 to 1998-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Lampe Brothers Sand & Gravel → Avail Valley Construction; 1998-06-01 to 2013-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Alan W  Lampe et al → Avail Valley Construction; 1998-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alan W  Lampe et al → Lampe Brothers Sand & Gravel; 1998-06-01 to 2013-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Edward B  Lampe et al → Lampe Brothers Sand & Gravel; 1998-06-01 to 2013-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Billie Jo  Kilroy → Avail Valley Construction; 2007-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Avail Valley Construction; 2009-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Fidler Inc; 2009-04-30 to 1995-06-18; source msha-controller-operator-history
- **operator_operates_mine:** Kilroy, LLC → Avail Valley Construction; 2013-10-01 to 2020-03-15; source msha-controller-operator-history
- **controller_controls_operator:** Billie Jo  Kilroy → Kilroy, LLC; 2013-10-01 to 2020-03-15; source msha-controller-operator-history
- **operator_operates_mine:** Avail Valley Construction-WY, LLC → Avail Valley Construction; 2020-03-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** AVCO Holdings LLC → Avail Valley Construction; 2020-03-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** AVCO Holdings LLC → Avail Valley Construction-WY, LLC; 2020-03-16 to current/open; source msha-controller-operator-history