Increased cancer rates in miners explored in new studies

It has been known for decades that coal miners have cancer rates significantly higher than the general population.  Many factors have been investigated including radon exposure, trace radioactivity, lack of natural sunlight, and on and on.  Two new studies in the Journal of the National Cancer Institute explore the link between the increased cancer rates and the exposure of miners to diesel exhaust.  They found that miners are exposed to incredibly high levels of diesel fuel exhaust compared to the general public and that this exposure can be linked to their risk of developing cancer.  If you'd like to read the papers, you can do so for $32 dollars a piece at this link.
Although your tax dollars support the government researchers who performed this study and the journal that published this study, you don't get access to this information unless you pay a ridiculous fee to access it.  Thats how the scientific literature works today.  You can read more about this study here.