South Korea's biggest company is trying to reassure the public after a January lawsuit involving six people who developed leukemia and lymphoma they claim was caused by exposure to radiation and benzene, a carcinogen, in Samsung chip factories. Four of them have died. The company has invited reporters to a chip plant south of Seoul to demonstrate its manufacturing process and emphasize its commitment to safety. "There is no risk," said Cho Soo-in, president of the company's memory division.

Activist groups say at least 23 people _ including those named in the lawsuit _ developed cancer over about a decade due to working at Samsung and that at least nine have died. Samsung said that 22 chip plant workers were diagnosed with leukemia or lymphoma and that 10 died between 1998 and this year.

The lawsuit was filed against a government agency, the Korea Workers' Compensation & Welfare Service, after it refused to pay compensation following an investigation by occupational safety authorities who failed to find work-related causes for the cancers.

Samsung is not a defendant but is cooperating with the service at the trial.

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