WATERBURY QUARRY Metal/Non-Metal

H.I. STONE AND SON INC. · Surface

Controlled by Harry H Stone III

Waterbury, New Haven County, CT · Intermittent

MSHA Mine ID: 0600761

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Compliance record

MSHA citations since 2010

187

citations

significant & substantial

$62,781

proposed penalties

$53,688

paid to date

Source: MSHA violations data, updated weekly.

Quarterly safety rates

Citations per million employee-hours, as reported to MSHA

Quarter	Hours worked	Citations	S&S	Per 1M hrs
2025 Q4	5,888	0	0	0.0
2025 Q3	6,179	0	0	0.0
2025 Q2	7,402	0	0	0.0
2025 Q1	5,628	12	1	2132.2
2021 Q3	4,850	9	0	1855.7
2021 Q2	5,659	0	0	0.0
2021 Q1	4,600	13	3	2826.1
2020 Q4	5,072	0	0	0.0

Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.

No fatalities recorded at this mine.

1 on file

June 21, 2014 CT · Metal/Non-Metal laborer, blacksmith, bull gang, parts runner, roustabout, pick-up man, pitman IGNITION OR EXPLOSION OF GAS OR DUST

H.I. Stone and Son Inc. · Contact with hot objects or substances

Employee decided to use gasoline when burning garbage.