Vista Chemical Company 900 Threadneedle Houston, Texas 77079 (713) 588-3000 P.O.

TO: Interoffice Communication FROM: DATE: SUBJ: Harold Kramer TOG: JL: Egt: -fiph ^6: RF XF: V\ j _________________ T.

TO: Distribution Interoffice Communication FROM: DATE: SUBJ: T.

TO: Interoffice Communication FROM: DATE: SUBJ: J.

TO: Jeff Fenton FROM: DATE: Interoffice CTTn T, Communication*^ ' T.

TO: Eric Meyer IntarofllM Communication FROM: DATE: STJBJ: J.

TO: Distribution TfSer* XF: \G /\Q_^ AJO: RF Interoffice Communication FROM: DATE: SUB J: T.

Vista Chemical Company 900 Threadneedle Houston, Texas 77079-2990 (713) 588-3000 P.O.

TO: Distribution XF: florae Interoffice Communication FROM: DATE: SUBJ: T.

Vista Chemicoi Company July 24, 1990 900 Threadneedle Houston, Texas 77079 (713) 588-3000 P.O.

TO: Distribution T0S: ran: RF Interoffice Communication FROM: DATE: SUBJ: T.

SORDSA Surveillance of Occupational Respiratory Diseases in South Africa ALERT FEBRUARY 1999 Crystalline Silica Health Hazards and Precautions National Centre for Occupational Health (NCOH) Department of Health P.O.

CRITERIA FOR A RECOMMENDED STANDARD Occupational Exposure to Respirable Coal Mine Dust U.S.

Chapter 44 LABORATORY EVALUATION OF A CANOPY AIR CURTAIN FOR CONTROLLING OCCUPATIONAL EXPOSURES OF ROOF BOLTERS G.V.R.

DEPARTMENT OF HEALTH ____________________________________________________________________________ Pathology Division Report: Demographic Data and Disease Rates for January - December 1999 Dr Jill Murray Lizet Coetzee NATIONAL CENTRE FOR OCCUPATIONAL HEALTH NCOH Report P O Box 4788 JOHANNESBURG 2000 TABLE OF CONTENTS Executive Summary Section 1: Introduction Section 2: Data Description Distribution of autopsies by year & ethnic group (1975-1999) Number of autopsies by age & ethnic group (1999) Number of autopsies by type & ethnic group (1999) Number of autopsies by industry & ethnic group (1999) Number of autopsies by years of service & ethnic group (1999) Mean duration of service and mean age by type of mine & ethnic group (1999) Section 3: Active Tuberculosis Distribution of active tuberculosis by anatomical site (1999) Number and prevalence of pulmonary tuberculosis by age& ethnic group (1999) Number and prevalence of pulmonary tuberculosis by industry& ethnicgroup (1999) Section 4: Silicosis Number and prevalence of silicosis by industry & ethnic group (1999) Number and prevalence of silicosis in gold miners by age & ethnic group (1999) Section 5: Massive Fibrosis, Coal Workers' Pneumoconiosis, Mixed dust Fibrosis & Asbestosis Number and prevalence of asbestosis by age & ethnic group (1999) Section 6: Emphysema Number and prevalence of emphysema by age & ethnic group (1999) Number and prevalence of emphysema by industry & ethnic group (1999) Number and prevalence of emphysema by years of service & ethnic group (1999) Section 7: Mesothelioma Number of mesothelioma cases by age & ethnic group (1999) Number of mesothelioma cases by industry & ethnic group (1999) Section 8: Primary Lung Cancer Number and prevalence of primary lung cancer by age & ethnic group (1999) Number and prevalence of primary lung cancer by industry & ethnic group (1999) Section 9: Causes of death Causes of death by ethnic group (1999) Appendix: Distribution of autopsies according to the last mine the deceased worked at 3 4 5 6 7 7 8 9 10 11 11 12 13 14 15 16 17 17 18 18 19 20 21 22 2 EXECUTIVE SUMMARY South African law requires the examination of the cardiorespiratory organs of deceased miners and ex-miners for compensation purposes, provided the next of kin agrees.