Document 3JDpJExrDROpjE0jn8nVRdOGE

DIVISION Of SAFETY AMD HTaiENg INDUSTRIAL COMMISSION Of OHIO '^ April 11, I960 , ' V- , ; s. '` ; Mr. James H.Fluker, Superintendent `, Division of Saftty up Hygiene -r Coluwbu* 15, Ohio. Rei Kimble Glass Company/ Coluebus, Ohio , *w 1* On March 21, 1960 a visit mi made to the above-named company to check du*t conditions. . 1 2. Contact: aa mad^with Mr, Raymond J. Leddy, Safety Director. r a. ', v. 3* Tha coapany **r.vracturee television picture tuba shells.*, % .' * a'.,.. . . 4. A cutting abrasive, containing 97 per cant fra*'silica, la Mixed with water aiv? sprayed oh wolds which are enclose^ in a aachlne. The wolds are then rewoved, cleaned,rand dried.wltlv forced air. ` * ' ' J*' ` 5. Dust couinta we?.e1 t#Ven and the - '. Results art at follows i . * ISZ , ,,, -V UEgOST * A. In the breathing'.so/* of tbeVapox blaster operator.; B. Approximately.30' from vapor blatter Machine to obtain general dust concentration^ ... C. Breathing aonepf wold grinder operator. 3.1 . 1.7 4,36 MPPCF - willlon particles per euble foot of air. 6. According to Bulletin-N& 203 the maximum allowable concentration for duet containing fro*'3 to SOspSrtt cent free gllloale 20.0 Million partlclea per cubic foot of air. - The meximoa allowable concentration for. dust oontainlng over 50 per cent free elltea-it.5.0 Million particles per cubic foot of air. The Division of'Safety*and Hygiene-reeoemende that the duet concentration, if at all possible,' be kept below 2.0 Million particles per cubic foot of air. - i- . / f J V _ . . < . . 7. A dust saople was taken to determine the per cent of free silica in the breathing sons of the vapor blaster operator.- A sufficient quantity of dust wet not obtained for a reliable Xray dlffraotion analysis. 8. It Is recommended theti A. The coapany attaopt -to replace the silica abrasive with a harmless abrasive, B. eater under pressure bmapplied to the molds so as to wash away aost of the silica abrasive*before air is used to dry tbas. 9. It waa a pleasure to visit this coapany and their cooperation was greatly appreciated. Respectfully submitted, \`'f Richard Heepy "" - Industrial Hygienist RH/ap DeNitt Huffman -/ Industrial Hygiene EnglwVe# s