# NTSB Safety Recommendation P-74-007

**Citation:** P-74-007  
**Type / status:** guidance / guidance  
**Agency:** National Transportation Safety Board  
**Effective:** 1974-02-07  
**Published:** 1974-02-07

THE NTSB RECOMMENDS THAT THE UGI CORPORATION: INITIATE MORE CONTROLLING INSPECTION PROCEDURES ON CONSTRUCTION PROJECTS IN THE VICINITY OF ALL GAS FACILITIES. WHERE THESE PROJECTS INVOLVE BLASTING, THE UGI INSPECTOR SHOULD OBSERVE THE SHOT HOLE LOADINGS AND OBTAIN A COPY OF THE BLASTER'S "DIARY" FOR UGI RECORDS.

## Document text

NTSB safety recommendation P-74-007.

THE NTSB RECOMMENDS THAT THE UGI CORPORATION: INITIATE MORE CONTROLLING INSPECTION PROCEDURES ON CONSTRUCTION PROJECTS IN THE VICINITY OF ALL GAS FACILITIES. WHERE THESE PROJECTS INVOLVE BLASTING, THE UGI INSPECTOR SHOULD OBSERVE THE SHOT HOLE LOADINGS AND OBTAIN A COPY OF THE BLASTER'S "DIARY" FOR UGI RECORDS.

Priority: CLASS II

Overall Status: Closed - Acceptable Action

Issued Date: 1974-02-07

Adopted Date: 1974-02-07

Overall Date Closed: 1976-09-10

Synopsis: IN COOPERSBURG, PA., ON FEBRUARY 21, 1973, A GAS PIPELINE WAS RUPTURED BY DYNAMITE AND GAS AT 50 PSIG ENTERED AN APARTMENT HOUSE AND EXPLODED. FIVE PERSONS WERE KILLED, 16 PERSONS WERE INJURED, AND 2 BUILDINGS WERE DESTROYED.

Ntsbnumber: PLD73XR003

Report Number: PAR-74-01

Addressee Name: UGI Corporation

Addressee Status: Closed--No Longer Applicable

Addressee Date Closed: 1976-09-10

Addressee Organization Type: P-Private Industry

Communication Date: 1974-12-31

Communication Type: Official Correspondence

Communication Contents: LETTER FROM UGI CORPORATION: OUR PEOPLE ARE INSTRUCTED TO OBSERVE THAT BLASTING IS CARRIED OUT IN ACCORDANCE WITH THE PENNSYLVANIA DER TITLE 25 REGULATIONS. CORRESPONDENCE DOCUMENTATION INCOMPLETE.

## Provenance

- Official: Yes
- Source: <https://data.ntsb.gov/carol-main-public/sr-details/P-74-007>
- Source ID: `ntsb-pipeline`
- SHA-256: `35da63ae9d7aabbe8000904f8efb9e64b92aac60f80f3beb531436bc6b8af0b7`
- Retrieved: 2026-08-20T04:57:24.741Z
- Exported: 2026-08-24T15:03:31.689Z
- Document slug: `ntsb-recommendation-p-74-007`

### Source metadata

```json
{
  "recordKind": "ntsb_safety_recommendation",
  "safetyRecommendationNumber": "P-74-007",
  "recommendationMode": "Pipeline",
  "topicMode": "Pipeline",
  "ntsbNumber": "PLD73XR003",
  "priority": "CLASS II",
  "overallStatus": "Closed - Acceptable Action",
  "overallStatusAcronym": "CAA",
  "overallDateClosed": "1976-09-10",
  "lastModifiedDate": "2016-11-15",
  "reportNumber": "PAR-74-01",
  "reportUrl": "https://www.ntsb.gov/investigations/Pages/PLD73XR003.aspx",
  "transmittalLetterUrl": "http://www.ntsb.gov/safety/safety-recs/recletters/P74_1_9.pdf",
  "addressees": [
    {
      "addresseeName": "UGI Corporation",
      "addresseeStatusAcronym": "CNLA",
      "addresseeStatus": "Closed--No Longer Applicable",
      "addresseeDateClosed": "1976-09-10",
      "addresseeDetails": [
        {
          "addresseeAcronym": null,
          "addresseeOrganizationType": "P-Private Industry",
          "isFromNtsb": false,
          "communicationDate": "1974-12-31",
          "communicationType": "Official Correspondence",
          "communicationContents": "LETTER FROM UGI CORPORATION: OUR PEOPLE ARE INSTRUCTED TO OBSERVE THAT BLASTING IS CARRIED OUT IN ACCORDANCE WITH THE PENNSYLVANIA DER TITLE 25 REGULATIONS. CORRESPONDENCE DOCUMENTATION INCOMPLETE."
        }
      ]
    }
  ],
  "jurisdiction": "US"
}
```