DIAMOND MATERIALS
924 SOUTH HEALD STREET, WILMINGTON, DE 19801 · NAICS 237310 Highway, Street, and Bridge Construction
Having inspection records is common for businesses in regulated industries. Data and methodology
Inspection records
Mar 29, 2022#345863062Mar 29, 2022Referral (C) · Partial scope, Safety#345863062$12,1824 viol.4 violations$12,182 in penalties
Inspection #345863062
Dates
- Opened
- Mar 29, 2022
- Closing Conference Date
- Mar 29, 2022
- Final Order
- Dec 6, 2022
- Closed
- Jun 12, 2023
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 1
- Related Activity
- 1 referral
Violations and Penalties
- Total Violations
- 4
- Violation Types
- 2 serious, 2 other-than-serious
- Initial Penalties
- $17,404
- Penalties on Record
- $12,182
- Site Address
- 620 A Street, Wilmington, DE 19801
- Industry
- 237310 Highway, Street, and Bridge Construction
Referral Inspection: This inspection record is categorized as a referral inspection in the DOL OSHA enforcement data. Referral inspections can result from another agency, another OSHA activity, or another source referring a potential hazard to OSHA.
Violations
Violation list (4 of 4 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001A | 1926.20 General Safety and Health Provisions OSHA citation code: 19260020 B02 | Other | 1 | 4 | $8,702 | $6,091 | Oct 20, 2022 | - | Dec 6, 2022 |
| 01001B | 1926.21 Safety Training and Education OSHA citation code: 19260021 B02 | Other | 1 | 4 | $0 | $0 | Oct 13, 2022 | - | Dec 6, 2022 |
| 01002A | 1926.200 Accident Prevention Signs and Tags OSHA citation code: 19260200 G01 | Serious | 1 | 4 | $8,702 | $6,091 | - | Dec 6, 2022 | |
| 01002B | 1926.200 Accident Prevention Signs and Tags OSHA citation code: 19260200 G02 | Serious | 1 | 4 | $0 | $0 | - | Dec 6, 2022 |
Dec 22, 2021#345699904Dec 22, 2021Planned (H) · Partial scope, Safety#345699904$27,4097 viol.7 violations$27,409 in penalties
Inspection #345699904
Dates
- Opened
- Dec 22, 2021
- Closing Conference Date
- Dec 22, 2021
- Final Order
- Jul 26, 2022
- Closed
- Oct 19, 2022
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 100
- Related Activity
- 1 referral
Violations and Penalties
- Total Violations
- 7
- Violation Types
- 5 serious, 2 other-than-serious
- Initial Penalties
- $49,306
- Penalties on Record
- $27,409
- Site Address
- W 3rd Street & N Broom Street, Wilmington, DE 19805
- Industry
- 237310 Highway, Street, and Bridge Construction
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Violations
Violation list (7 of 7 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001A | 1910.1200 Hazard Communication OSHA citation code: 19101200 E01 | Serious | 1 | 9 | $8,702 | $6,091 | - | Jul 26, 2022 | |
| 01001B | 1910.1200 Hazard Communication OSHA citation code: 19101200 E01 I | Serious | 1 | 9 | $0 | $0 | - | Jul 26, 2022 | |
| 01001C | 1910.1200 Hazard Communication OSHA citation code: 19101200 H01 | Serious | 1 | 9 | $0 | $0 | Jul 14, 2022 | - | Jul 26, 2022 |
| 01002 | 1926.20 General Safety and Health Provisions OSHA citation code: 19260020 B02 | Serious | 1 | 8 | $10,151 | $7,106 | - | Jul 26, 2022 | |
| 01003 | 1926.21 Safety Training and Education OSHA citation code: 19260021 B02 | Serious | 1 | 9 | $10,151 | $7,106 | - | Jul 26, 2022 | |
| 01004A | 1926.200 Accident Prevention Signs and Tags OSHA citation code: 19260200 G01 | Other | 1 | 9 | $10,151 | $7,106 | - | Jul 26, 2022 | |
| 01004B | 1926.200 Accident Prevention Signs and Tags OSHA citation code: 19260200 G02 | Other | 1 | 9 | $10,151 | $0 | - | Jul 26, 2022 |
Jul 8, 2016#341606564Jul 8, 2016Complaint (B) · Partial scope, Safety#341606564$36,8817 viol.7 violations$36,881 in penalties
Inspection #341606564
Dates
- Opened
- Jul 8, 2016
- Closing Conference Date
- Nov 18, 2016
- Final Order
- Jan 4, 2017
- Closed
- Feb 16, 2017
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 210
- Related Activity
- 1 complaint, 1 referral
Violations and Penalties
- Total Violations
- 7
- Violation Types
- 7 serious
- Initial Penalties
- $36,881
- Penalties on Record
- $36,881
- Site Address
- 924 South Heald Street, Wilmington, DE 19801
- Industry
- 237310 Highway, Street, and Bridge Construction
Complaint Inspection: This inspection record is categorized as a complaint inspection in the DOL OSHA enforcement data. OSHA can open complaint-driven inspections after receiving safety or health complaints from workers or their representatives.
Violations
Violation list (7 of 7 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001A | 1910.22 Walking-Working Surfaces - General Requirements OSHA citation code: 19100022 A01 | Serious | 1 | 4 | $4,811 | $4,811 | - | Jan 4, 2017 | |
| 01001B | 1910.23 Ladders OSHA citation code: 19100023 A09 | Serious | 1 | 3 | $0 | $0 | - | Jan 4, 2017 | |
| 01002 | 1910.23 Ladders OSHA citation code: 19100023 A02 | Serious | 1 | 4 | $4,811 | $4,811 | Dec 27, 2016 | - | Jan 4, 2017 |
| 01003 | 1910.27 Scaffolds and Rope Descent Systems OSHA citation code: 19100027 B07 | Serious | 1 | 4 | $6,413 | $6,413 | - | Jan 4, 2017 | |
| 01004 | 1910.134 Respiratory Protection OSHA citation code: 19100134 F02 | Serious | 1 | 4 | $4,811 | $4,811 | - | Jan 4, 2017 | |
| 01005 | 1910.219 Mechanical Power-Transmission Apparatus OSHA citation code: 19100219 D01 | Serious | 1 | 2 | $11,224 | $11,224 | - | Jan 4, 2017 | |
| 01006 | 1910.1200 Hazard Communication OSHA citation code: 19101200 H01 | Serious | 2 | 2 | $4,811 | $4,811 | Dec 27, 2016 | - | Jan 4, 2017 |
Sep 30, 2004#305946998Sep 30, 2004Planned (H) · Complete scope, Health#305946998$3,75412 viol.12 violations$3,754 in penalties
Inspection #305946998
Dates
- Opened
- Sep 30, 2004
- Closing Conference Date
- Nov 5, 2004
- Closed
- Dec 21, 2004
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 120
Violations and Penalties
- Total Violations
- 12
- Violation Types
- 8 serious, 4 other-than-serious
- Initial Penalties
- $5,775
- Penalties on Record
- $3,754
- Site Address
- 924 South Heald Street, Wilmington, DE 19801
- Industry
- 324121 Asphalt Paving Mixture and Block Manufacturing
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Violations
Violation list (10 of 12 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001A | 1910.23 Ladders OSHA citation code: 19100023 A05 | Serious | 1 | 8 | $1,100 | $715 | Nov 17, 2004 | - | - |
| 01001B | 1910.23 Ladders OSHA citation code: 19100023 C01 | Serious | 2 | 25 | $0 | $0 | Dec 30, 2004 | - | - |
| 01002 | 1910.23 Ladders OSHA citation code: 19100023 C03 | Serious | 1 | 5 | $1,375 | $894 | Dec 30, 2004 | - | - |
| 01003 | 1910.24 Step Bolts and Manhole Steps OSHA citation code: 19100024 H | Serious | 3 | 25 | $1,100 | $715 | Dec 30, 2004 | - | - |
| 01004A | 1910.215 Abrasive Wheel Machinery OSHA citation code: 19100215 A02 | Serious | 1 | 4 | $1,100 | $715 | Dec 30, 2004 | - | - |
| 01004B | 1910.215 Abrasive Wheel Machinery OSHA citation code: 19100215 B09 | Serious | 1 | 8 | $0 | $0 | Dec 30, 2004 | - | - |
| 01005A | 1910.253 Oxygen-Fuel Gas Welding and Cutting OSHA citation code: 19100253 B02 IV | Serious | 1 | 8 | $1,100 | $715 | Nov 16, 2004 | - | - |
| 01005B | 1910.253 Oxygen-Fuel Gas Welding and Cutting OSHA citation code: 19100253 B04 III | Serious | 1 | 8 | $0 | $0 | Nov 16, 2004 | - | - |
| 02001 | 1910.95 Occupational Noise Exposure OSHA citation code: 19100095 C01 | Other | 1 | 1 | $0 | $0 | Nov 16, 2004 | - | - |
| 02002 | 1910.95 Occupational Noise Exposure OSHA citation code: 19100095 D01 | Other | 1 | 1 | $0 | $0 | Nov 16, 2004 | - | - |
Showing the 10 violations listed first by citation identifier. This inspection has 12 total violations documented in the U.S. Department of Labor OSHA enforcement database. The complete violation list is available at enforcedata.dol.gov.
Mar 20, 1998#300305638Mar 20, 1998Planned (H) · Partial scope, Health#300305638$00 viol.0 violations$0 in penalties
Inspection #300305638
Dates
- Opened
- Mar 20, 1998
- Closing Conference Date
- Mar 31, 1998
- Closed
- Jan 5, 2011
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 40
Violations and Penalties
- Total Violations
- 0
- Initial Penalties
- $0
- Penalties on Record
- $0
- Site Address
- 924 South Heald Street, Wilmington, DE 19801
- Industry
- 237310 Highway, Street, and Bridge Construction
Planned Inspection: This inspection record is categorized as a planned inspection in the DOL OSHA enforcement data. Planned inspections are part of OSHA's scheduled enforcement activity rather than being opened directly from a complaint or reported incident at that worksite.
Penalty amounts may differ from final amounts after settlement or judicial review. How to read these records
About these records
A company page groups inspections with the same normalized employer name, city and state; it is not a legal-entity identifier (how pages are grouped).
This page displays public OSHA enforcement data. Status text follows the DOL inspection record first and may include citation-level context when the inspection feed and citation records are out of sync. Penalty amounts shown reflect the latest penalty amounts on record in the DOL database and may differ from initial assessments or final amounts. This is not an official OSHA resource.
OSHA's public enforcement data does not publish a "guilty" or "not guilty" field for inspections. The closest outcome fields available are the citation counts, penalty amounts, contest dates, final-order dates, and the inspection close date shown on this page. How to interpret these status fields. How initial and current penalties are recorded.
OSHA may publish multiple citation rows in the same inspection with the same standard and penalty fields. Separate rows can still differ in OSHA metadata such as citation identifier, recorded instance count, exposed workers, or gravity value. Contest and Final Order columns show citation-level dates from OSHA's enforcement record. A dash means OSHA's record does not currently show that activity for the citation.
Understanding These Penalties
The maximum penalty for a serious violation in 2025 is $16,550 per violation. For willful violations, the range is $11,823 to $165,514. The current penalty column shows the latest amount on record in OSHA's database for each citation. When the current penalty differs from the initial penalty, OSHA's records show that the amount changed during the enforcement process, but this page does not determine the specific reason for each change. Penalty amounts are set by OSHA and adjusted annually for inflation.
5 inspections, 1998 to 2022. Each row is one inspection; point at or tap a row for its dates and totals.
Source: DOL OSHA enforcement data (inspections and violations), linked via activity_nr (exact government key).
Penalty changes: Amounts shown reflect what OSHA's enforcement record publishes. The reason for any change is not stated unless OSHA's record explicitly says so.
Standards cited
Industry comparison
Heavy and Civil Engineering Construction, 70,282 employers with OSHA inspections. Arithmetic from DOL records.