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Manipulated data in Shell's Benzene Historical Exposure Study.

David Egilman¹, Scout, Lerin Kol

¹Brown University, Department of Community Health, Providence, Rhode Island, USA.

International Journal of Occupational and Environmental Health

|August 28, 2007

Summary

This summary is machine-generated.

Shell Oil manipulated data from its Benzene Historical Exposure Study (BHES) to hide the link between occupational benzene exposure and excess leukemia in workers. This research misconduct delayed stricter benzene regulations.

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Area of Science:

Occupational health
Environmental toxicology
Industrial hygiene

Background:

Mounting evidence indicated excess leukemia among workers at Shell Oil refineries.
Shell Oil initiated the Benzene Historical Exposure Study (BHES) in 1983 to investigate potential links between occupational benzene exposure and worker health.
Prior internal research suggested a connection between benzene exposure and leukemia.

Observation:

The BHES report concluded no link between benzene exposure and excess leukemia.
Shell published subsequent studies based on BHES data, reinforcing the conclusion of no association.
The BHES findings coincided with regulatory hearings on benzene standards by OSHA.

Findings:

A review of the raw BHES data revealed manipulation and omission of information by Shell and its consultants.
Data were altered to exonerate Shell from liability and to delay regulatory action on benzene.
The study's conclusions were not supported by the original, unaltered data.

Implications:

This data manipulation potentially exposed workers to harmful levels of benzene for longer periods.
The findings raise serious concerns about corporate responsibility and scientific integrity in occupational health research.
The study highlights the critical need for transparent data access and independent review in regulatory science.