<P> Cutting fluids present some mechanisms for causing illness or injury in workers . Occupational exposure is associated with increases in cardiovascular disease . These mechanisms are based on the external (skin) or internal contact involved in machining work, including touching the parts and tooling; being splattered or splashed by the fluid; or having mist settle on the skin or enter the mouth and nose in the normal course of breathing . </P> <P> The mechanisms include the chemical toxicity or physical irritating ability of: </P> <Ul> <Li> the fluid itself </Li> <Li> the metal particles (from previous cutting) that are borne in the fluid </Li> <Li> the bacterial or fungal populations that naturally tend to grow in the fluid over time </Li> <Li> the biocides that are added to inhibit those life forms </Li> <Li> the corrosion inhibitors that are added to protect the machine and tooling </Li> <Li> the tramp oils that result from the way oils (the lubricants for the slideways) inevitably finding their way into the coolant </Li> </Ul> <Li> the fluid itself </Li>

What type of cutting fluid were used during the lab