Samsung has finally wrapped up that investigation into alleged cancer risks at its chip facilities, but it might not share the details with the rest of the world. In the study, which the company commissioned last year, researchers from US-based Environ International Corp. found that cancers affecting six semiconductor employees were unrelated to any chemicals they may have been exposed to on the job. Of those six workers, four have already died and five of the families are currently pressing charges. Last month, a South Korea court determined that two of the cases could be linked to toxic chemical exposure -- a ruling that Environ's report clearly contradicts. Samsung, however, is reluctant to disclose the results in full, for fear that doing so may reveal some proprietary information. Environ's Paul Harper declined to say how much Samsung paid for the investigation, due to client confidentiality, while confirming that the research was carried out in consultation with a panel of independent experts. Semiconductor exec Kwon Oh-hyun, meanwhile, denied that the company commissioned the study in order to use it as evidence in the ongoing court case, in which Samsung isn't even listed as a defendant.