Document nkVakmqJpYgb1v6RQ2eg3162z

General Offices - St. Louie 66, Mo. November 12, 19^2 Pydraul Natl on*.1 Coal Board of-Great Britain Your memo - 11/2/62 Kr. C. B. Ammons General Offices Attached are two suasnariaa of toxicity and safe handling data; one for Pydraul F-9 and one for\Pydraul 150. I doubt that these will persuade the National Coal Board to talcs e. favorable view of the use of the Py&rauis in underground mines. I would not be concerned about the incidental exposure of ingesting either of thee* Pydr&uls by contaminating sandwich*s, etc., with the fluid on unwashed hands. The real problem with these fluids is the possibility of: 1. Repeated end prolonged skin contact can lead, to "defatting" of the- akin such as night occur with paint thinner. The loss of the nonml fat* and oils of the skin leads? tc chapping, cracking and possible infection. 2. More important, the components of the Fydrauls can be absorbed through the unbroken skin with the danger of subsequent systemic effects. V* would hesitate to reconEssnd the us* of these fluids where workmen would be exposed day-in and. day-out to skin contamination such as lc normally the experience of a mechanic repairing automobiles in the typical, garage-. perhaps this is not a good analogy but it is the beet I can offer. EFW-.sf Enclosure Elaer P. Wheeler DSW 584830 TOWOLDMON0046065 WATER_PCB-00037042