Annals of Occupational and Environmental Medicine

Welder' Pneumoconiosis of Shipyard and related Factors: Hae Sook Sohn, Seong Yong Choi, Young Jin Yu, Chae Un Lee; Korean Journal of Occupational and Environmental Medicine 1994;6(1):143-152. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.143

Pneumoconiosis is one of the most important occupational disease in Korea. In Pusan, most of pneumoconiosis is welders' pneumoconiosis developed in shipyard. With clinical (including interview with every patients) and radiological (chest radiographs) methods, author purposed to know the factors related to development of pneumoconiosis in shipyard welders and to apply the results to the concept for health care (management) of shipyard welders. The prevalence rate of welders' pneumoconiosis was calculated by the means of reading of chest radiographs of 547 shipyard welders. The prevalence rate of welders' pneumoconiosis (including suspected pneumoconiosis, category 0/1) was 7.9%. It was lower than that (8.9%) in same area studied in 1989. Prevalence rate increased as total welding duration increased and the welding work began early. It was higher in welders who did not use antidust mask. Probability of the occurance of welder's pneumoconiosis was related with the time that the welder began welding work. Sixteen cases among the 37 who were diagnosed as pneumoconiosis returned normal in the follow-up chest radiographs. There was no case aggrevated. The pertinent management for the personnels and their working environment contributed to the decrease of incidence of the welders' pneumoconiosis and the improvement of the disease. To prevent the occurance of the pneumoconiosis in shipyard welders, it seems to be necessary for the company to be supervised under the any legislation and to educate the welder to use the protective apparatus. It is suggested that considerate and continuous observation under the adequate management is preferable to the immediate conversion of the working department for the pneumoconiotic welders.

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Occupational Diseases in Korea
Seong-Kyu Kang, Eun A Kim
Journal of Korean Medical Science.2010; 25(Suppl): S4. CrossRef

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Respiratory Symptoms and Ventilatory Function Impairment of Taxi Drivers: Jong Han Leem, Jaehoon Rho, Kyung Jong Lee, Myung Jo Yuhn, Young Hahn Moon; Korean Journal of Occupational and Environmental Medicine 1994;6(1):134-142. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.134

Abstract PDF: The prevalence of respiratory symptoms and impairments of ventilatory capacity were studied in a group of 74 taxi drivers in Inchon area. As a reference group, 94 office workers of same area, matched with cigarette smoking, were also included in this study. Taxi drivers complained of respiratory symptoms much more than reference group. Those were cough, sputum production, chest tightness and shortness of breath. The ventilatory capacities, FVC (forced vital capacity), FEV(1.0) (forced expiratory volume 1 second), MMF (maximal mid flow) and PFR (peak flow rate), were measured. All measured values of ventilatory capacities of taxi driver were significantly decreased than those of reference group. The rate (56.8%) of ventilatory capacity impairment in taxi drivers was significantly larger than those (14.9%) of reference group, and the most of them were restrictive type impairments. Also, Job variable, prefessional driver or not, was selected as important determinant for ventilatory capacity impairment.

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Development of Technology for Environmental Assessment and Biological Monitoring of Workers Exposed to Benzene: Chul Whan Cha, Kwang Jong Kim, Jung Chul Kim, Nam Won Paik; Korean Journal of Occupational and Environmental Medicine 1994;6(1):122-133. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.122

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The objective of this study were to evaluate a correlation between airborne benzene concentrations and urinary muconic acid and to evaluate that between airborne benzene concentrations and urinary phenol concentrations. The high performance chromatographic method was used to measure the muconic acid concentrations in urine samples collected from 69 workers exposed to benzene and 155 non-exposed workers. The time weighted average benzene concentrations in breathing zone of workers were also determined. The physical examination and blood counts (hemoglobin, hematocrit, red blood cell, and white blood cell) were made for both workers exposed to benzene and control group. The results are as follows; 1. The geometric mean of airborne benzene concentrations for all workers was 2.0ppm (0.1-56.9ppm). The mean airborne benzene concentration of workers in adhesive tape manufacturing industry was 12.2ppm (8.3-56.9ppm), which was the highest by type of industry. 2. The geometric mean concentration of muconic acid in urine from male workers exposed to benzene was 3.9 mg/l (0.8-40.8 mg/l), which was significantly higher than that of non-exposed workers. The highest muconic acid concentration was indicated in the workers at the adhesive tape manufacturing industry. 3. There was a significant difference between the mean concentration of muconic acid of workers exposed to airborne benzene concentration of 5-10 pm and that of workers exposed to concentrations below 5 ppm. The urinary muconic acid concentration were correlated with airborne benzene concentration for workers (r=0.85). However there was no significant correlation between urinary phenol concentrations and airborne benzene concentrations. 4. The correlation coefficients between the urinary muconic acid concentration and airborne benzene concentration, urinary phenol concentration, exposure dose(airborne benzene concentration x work duration) and white blood cell were 0.85, 0.74, 0.63 and -0.33, respectively.

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Estimating Benzene Exposure Level over Time and by Industry Type through a Review of Literature on Korea
Donguk Park, Sangjun Choi, Kwonchul Ha, Hyejung Jung, Chungsik Yoon, Dong-Hee Koh, Seunghun Ryu, Soogeun Kim, Dongmug Kang, Kyemook Yoo
Safety and Health at Work.2015; 6(3): 174. CrossRef
Occupational Lymphohematopoietic Cancer in Korea
Eun-A Kim, Won Jin Lee, Mia Son, Seong-Kyu Kang
Journal of Korean Medical Science.2010; 25(Suppl): S99. CrossRef
Occupational exposure to benzene in South Korea
Seong-Kyu Kang, Mi-Young Lee, Tae-Kyun Kim, Jeong-Oh Lee, Yeon Soon Ahn
Chemico-Biological Interactions.2005; 153-154: 65. CrossRef

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Styrene in Air and Blood and Mandelic acid in Urine in the Workers exposed to Styrene: Ho Keun Chung, Seong Kyu Kang, Jeong Sun Yang, Ki Woong Kim, Jong Seong Lee, Young Sook Cho, In Jeong Park; Korean Journal of Occupational and Environmental Medicine 1994;6(1):113-121. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.113

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The concentration of styrene in air and in blood and mandelic acid in urine were checked for the 60 workers with normal liver function, exposed to styrene. Styrene in air were sampled with personal air sampler at least 4 hours and analyzed by gas chromatography. Blood and spot urine were collected at the end of shift with a vacuum tube and a plyethylene bottle and analyzed by has chromatography and high performance liquid chromatography. Means of air and blood styrene and urine mandelic acid were 8.16 ppm (geometric mean), 0.199 mg/L, and 0.519 g/g creatinine, respectively. The concentration of styrene in air and mandelic acid in urine were high in the FRP factories and low in polymerization factory. Styrene in blood showed large difference by the working process. Styrene in air showed a good correlation with mandelic acid in urine(r=0.6369) and styrene in blood(r=0.6371). The mandelic acid in urine and styrene in blood corresponded to exposure of 50 ppm styrene were 0.890 g/g creatinine and 0.434 mg/L. However, hippuric acid in urine did not show any correlation with styrene in air. Urine mandelic acid excretion expected ratio showed a tendency to decrease according to obesity index and to increase with alcohol consumption.

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Evaluation of the Suitability of Establishing Biological Exposure Indices of Styrene
Ah-rum Choi, Sung-guk Im, Mi-young Lee, Se-Hoon Lee
Safety and Health at Work.2019; 10(1): 103. CrossRef

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A Study on the Manganese Exposure and Health Hazards Among Manganese Manufacturing Workers: Ji Yong Kim, Hyun Sul Lim, Hae Kwan Cheong, Nam Won Paik; Korean Journal of Occupational and Environmental Medicine 1994;6(1):98-112. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.98

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To estimate the manganese (Mn, below) exposure of workers in the ferromanganese manufacture factory and to evaluate its health effects, airborne, blood and urine Mn concentration measurements, questionnaire and other neurologic examinations were performed on 80 Mn-handing productive male workers (exposed group), 47 non-Mn-handling productive male workers (internal control group) and 144 productive male workers in other factory (external control group). The results obtained were as follows; The highest airborne Mn fume concentration among the work process was found at charging (0.42 mg/m3), and ferromanganese crushing process (1.14 mg/m3) was the highest in Mn dust. However all of them were below threshold limit value. Mean Mn concentrations in blood and urine of crushing workers were higher than those of other part workers. Among all of them, workers whose urine Mn concentration were exceed normal reference level (10 microgram/l) were 31 (18.5%). There was statistically significant correlation between airborne and urine Mn concentration (r=0.60), and so between airborne and blood Mn concentration (r=0.49), while there was no statistically significant correlation between blood and urine Mn concentration. Mean Mn concentration in airborne (0.60 mg/m3), urine (6.92 microgram/l) and blood (3.16 microgram/dl) in exposed group were significantly higher than those of control groups (p<0.01). Clinical symptoms such as excessive sweating, hypoesthesia, libido change, anosmia, decreased visual acuity and difficulty in writing showed higher positive rate in exposed group. Positive rate of clinical signs such as eye blinking and masked face in exposed group was higher than external control group. However clinical and laboratory findings such as blood pressure, blood chemistry, grip strength in exposed group were not statistically different from those of control groups. The results suggested that further studies were followed to evaluate the workers whose blood Mn concentration were below normal reference level but urine Mn concentrations above normal reference level, and to establish the questionnaire and the diagnostic tools to detect the Mn poisoning workers early.

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A Study on the Total, Particle Size-Selective Mass Concentration of Airborne Manganese, and Blood Manganese Concentration of Welders in a Shipbuilding Yard
Jong Su Park, Pan Gyi Kim, Jee Yeon Jeong
Journal of Korean Society of Occupational and Environmental Hygiene.2015; 25(4): 472. CrossRef
Neurobehavioral Deficits and Parkinsonism in Occupations with Manganese Exposure: A Review of Methodological Issues in the Epidemiological Literature
Robert M. Park
Safety and Health at Work.2013; 4(3): 123. CrossRef
Exposure-Response Relationship and Risk Assessment for Cognitive Deficits in Early Welding-Induced Manganism
Robert M. Park, Rosemarie M. Bowler, Harry A. Roels
Journal of Occupational & Environmental Medicine.2009; 51(10): 1125. CrossRef
Sequelae of fume exposure in confined space welding: A neurological and neuropsychological case series
Rosemarie M. Bowler, Sanae Nakagawa, Marija Drezgic, Harry A. Roels, Robert M. Park, Emily Diamond, Donna Mergler, Maryse Bouchard, Russell P. Bowler, William Koller
NeuroToxicology.2007; 28(2): 298. CrossRef
State-of-the-Science Review: Does Manganese Exposure During Welding Pose a Neurological Risk?
Annette B. Santamaria, Colleen A. Cushing, James M. Antonini, Brent L. Finley, Fionna S. Mowat
Journal of Toxicology and Environmental Health, Part B.2007; 10(6): 417. CrossRef
Issues in neurological risk assessment for occupational exposures: The Bay Bridge welders
Robert M. Park, Rosemarie M. Bowler, Donald E. Eggerth, Emily Diamond, Katie J. Spencer, Donald Smith, Roberto Gwiazda
NeuroToxicology.2006; 27(3): 373. CrossRef

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A Study on the Activity of Erythrocyte Pryrimidine 5'-Nucleotidase in Workers Exposed to Lead: Soung Hoon Chang, Yong Tae Yum; Korean Journal of Occupational and Environmental Medicine 1994;6(1):85-97. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.85

Abstract PDF: In this study, we measured the activity of the erythrocyte pyrimidine 5'-nucleotidase(P5N) for 83 workers exposed to lead in their workplace, and analyzed the correlation of the activity with other biological exposure indices of lead. The measurement was performed by using a high performance liquid chromatography (HPLC) with a reverse phased ODS column. The results are as follows; 1. The correlation of the erythrocyte P5N activity with the concentration of blood lead(PbB) was shown to be statistically significant (r=-0.71, p=0.0001). 2. For a group of subjects whose PbB was less than 10microgram/dl, the erythrocyte P5N activity was 14.9+/-1.5 micromole uridine/h/g Hb. 3. For medical surveillance, this study suggests the erythrocyte P5N activity of 12 micromole uridine/h/g Hb is equivalent to 40 microgram/dl of PbB. 4. The correlation coefficients of the erythrocyte P5N activity with other biological exposure indices of lead such as PbB, ZPP, ALA-U, PBU, CP-U, ALAD, and log ALAD were -0.71, -0.64, -0.57, -0.51, -0.50, 0.46 and 0.64, respectively. 5. The correlation coefficients of the PbB with other biological exposure indices of lead for ALAD, P5N, ZPP, PBU, CP-U, and ALA-U were -0.76, -0.71, 0.68, 0.59, 0.42, and 0.41, respectively. The erythrocyte P5N activity can be used as a reliable biological exposure index of lead.

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Effect of Maternal Job Activity on Preterm Delivery, Low Birth Weight and Spontaneous Abortion: Yong Deok Shin, Tae Yong Lee, Young Soo Lee, Dong Bae Lee; Korean Journal of Occupational and Environmental Medicine 1994;6(1):69-84. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.69

Abstract PDF: To investigate the effect of maternal job activity on the preterm delivery, low birth weight infant and spontaneous abortion, 1646 delivery data were analyzed from Jan. 1991 to Dec. 1992 in Chungnam University Hospital. The results obtained were as follows; 1. The percentage of subjects who had job during pregnancy was 20.3% and the variables of maternal age, education level, prepregnancy weight, maternal height, number of abortion showed significant difference in the distribution of subjects whether they had job or not. 2. There were no significant difference between the group who had job during pregnancy and those who had no job in the mean gestational period, number of spontaneous abortion, rate of preterm delivery and spontaneous abortion. However mean birth weight and rate of low birth weight showed significant difference between the groups. 3. The rate of preterm delivery of the group who had job were higher than those who had no job activity in the subgroup of 35 years or more age, prematurity history presence, 2 or more abortion history, obstetric complication presence, but there were no significant difference. The rate of low birth weight also higher in the group who had job than those who had no job activity in the same subgroup except obstetric complication presence. 4. The rate of spontaneous abortion of the group who had job were higher than those who had no job activity in the subgroup of 35 years or more age, below high school, height of 163cm or above, but there were no significant difference. 5. Rate of preterm delivery still showed better results in the group who had job than the group who had no job when adjusted for variables related, but there was no statistical significance. 6. Rate of low birth weight still showed better results with statistical significance in the group who had job than the group who had no job when adjusted for variables related. 7. Spontaneous abortion had occured less frequently in the group who had job than the group who had no job when adjusted for variables related. 8. Rate of preterm delivery and low birth weight were lower in the group of teacher, bank clerk, medical personnel, citizen servant than the group who had no job, but higher in the job of company employee, commerce. Spontaneous abortion was most frequent in group of commerce, and the group of teacher, company employee showed higher rate of abortion than the group who had no job.

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Changes in Cadmium Deposit and Histopathologic Finding of Testis, Liver and Kidney in Cadmium Exposed Rats: Young Goo Lee, Jung Duck Park, Byung Sun Choi, Yeon Pyo Hong, Im Won Chang; Korean Journal of Occupational and Environmental Medicine 1994;6(1):56-68. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.56

Abstract PDF: To assess the changes of cadmium deposit and histopathologic finding of testis, liver and kidney, different dose of cadmium (Cd) was administered into male Sprague-Dawley rat(purchased from KIST, Korea Institute of Science and Technology) by single intravenous injection. At 12, 24, 48, 168 and 672 hours after Cd injection, tissue cadmium concentration and histopathological change were examined. Cd exposed group showed lesser weight gain than the control. Renal Cd content tended to increase in time-dependent pattern, while hepatic and testicular Cd content tended to decrease. Mean of renal Cd content to hepatic Cd content (Cd K/Cd L) also progressively increased. These results suggest that Cd might be gradually transported to kidney fro other organs. In testis and liver, degenerative changes appeared relatively in acute phase. These changes became more pronounced in testis, while less prominent in liver. In kidney, swelling of proximal tubluar cells and thickening of glomerular basement membrane appeared relatively later and these changes were progressively aggravated.

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The Factors associated with Knowledge, Attitude and Practice Regarding Occupational Health Among Small and Medium Scale Industry Workers: Chung Yill Park, Kang Sook Lee, Won Chul Lee, Se Hoon Lee; Korean Journal of Occupational and Environmental Medicine 1994;6(1):42-55. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.42

Abstract PDF

This study was carried out to determine the knowledge(K), attitude(A) and practice(P) on major occupational health problems among small and medium scale industry workers in Kimpo area. We used self-administered questionnairs regarding the emergency treatment on accident, the management of hazardous materials, the work place hygiene, the health risk of young workers and female works, the use of protective device, prevention of occupational disease, the periodic physical examination and the occupational health administration. The results obtained were as follow; 1. There were significant differences among age groups on the KAP. The teenage group had the lowest scores. As the age increased, total mean scores of KAP were increased concurrently, and this trend was statistically significant. 2. There was significant differences between male and female subjects on total mean scores of knowledge. But on that of the attitude and practice, there was no significant difference between male and female subjects. 3. As the size of enterprise increased, the mean scores of knowledge, attitude and practice were increased, but this trend was not statistically significant. 4. As the work duration increased, the mean scores of the attitude and the practice were increased. But the mean scores of the knowledge did not show this trend. 5. The white collar workers had significant higher scores than blue collar workers on knowledge, but there were not significant differeneces on attitude and practice. 6. The significantly associated variables on knowledge were work status and sex. On attitude and practice, age and work duration were significantly associated variables, but the degree of association was low. 7. When stepwise multiple regression analysis was done, work status, sex, age were significantly attributed to knowledge, age and sex wwere attributed to attitude, and age was attributed to knowledge, but the coefficient of determination were very low. In conclusion in small and medium scale industry workers, there were weak or no effects of age, sex of enterprise, work duration and work status on knowledge, attitude and practice regarding occupational health. So, it is suggested that all the members of the workers should be included in health education program for the workers.

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Effects of a Problem-Based Learning Education Program for Occupational Health Nursing Using Smart Learning on Occupational Health Knowledge and Nursing Professionalism
Kyung Jin Hong
Healthcare.2024; 12(7): 737. CrossRef
Participation inequality in the National General Health Examination based on enterprise size
Young Joong Kang, Jong Heun Park, Huisu Eom, Bohwa Choi, Seyoung Lee, Ji-Won Lee, Jun-Pyo Myong
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A Predictive Model of Workers' Quality of Life
Bok-Im Lee, Hye-Sun Jung
Korean Journal of Occupational Health Nursing.2011; 20(1): 35. CrossRef

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The Changes of Hearing Threshold Level in Noise-exposed Workers: Byung Mann Cho, Jong Ook Park; Korean Journal of Occupational and Environmental Medicine 1994;6(1):32-41. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.32

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Using audiometric test data, noise exposed workers were followed up to assess the activities for hearing conservation from 1989 to 1992. The subjects of study were 71 workers who could be followed up at least two years during this follow-up period. In all subjects, increasing trend of hearing threshold levels (HTLs) was observed after three years of follow-up at all testing frequencies in audiometry and this increase was statistically significant at 8KHz(p<0.05). Also, HTLs increased significantly(p<0.05) in the workers who complained tinnitus(at 0.25, 8KHz), who ws below 90 dB (at 8KHz). Effectiveness of the activities for hearing conservation, assessed by sequential test-retest comparisons, was lower in the workers who complained tinnitus, who had past history of ear disease, and whose workplace noise level was below 90 dB. These findings suggest that the activities for hearing conservation at workplace may have been unsatisfactory until now and more stringent measures may be necessary, especially in the workers who complain tinnitus, who have past history of ear disease, and whose workplace noise level is below 90dB.

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For 5-years the Longitudinal Study on the Effect of Noise Exposure and Aging to the Changes of Hearing Threshold Level
Chang Ho Chae, Ja Hyun Kim, Jun Seok Son
Journal of Korean Society of Occupational and Environmental Hygiene.2015; 25(4): 573. CrossRef

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Radiological Findings of Low Back Pain Complainers in Some Part of Kyungin area workers: Yong Hee Cheon; Korean Journal of Occupational and Environmental Medicine 1994;6(1):26-31. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.26

Abstract PDF: Preliminary survey of low back pain(LBP) was conducted from 7,668 workers of some part of Kyungin area. Among them, 1,183 workers complained LBP. If we do not mind X-ray findings, the prevalence rate of LBP was 15.4%. Lumbar series(anterior-posterior view, lateral view, both oblique view) were take from 973 workers who complained LBP. Three radiological findings which are not related with congenital anomaly or definite trauma-degenerative spondylitis, flattening of the lumbar spine, decreased intervertebral disc space were selected. In the group of degenerative spondylitis, the prevalence rate was relatively high after thirties in both sex. In female, prevalence rate was more higher in 5th and 6th decades than other decades. In the case of flattening of lumbar spine, the prevalence rate was relatively high in 2nd, 3rd and 4th decades in both sex. In case of decreased intervertebral disc space, there was no specific prevalent age group in both sex.

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Selection of Testing Frequency in Bone Vibrator of Audiometer for Measurement of Vivration Perception Threshold: Jong Young Lee, Wan Seoup Park, Yeong Hwan Kim, Doohie Kim; Korean Journal of Occupational and Environmental Medicine 1994;6(1):17-25. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.17

Abstract PDF: Both to determine testing frequency in bone vibrator of audiometer for measurement of vibration perception threshold(VPT) and to evaluate factors influencing VPT, ninty seven healthy adults were tested on their second metacarpal head of both hands, at 250Hz, 500Hz, 1,000Hz and so on. Measures of the VPTs at 1,000Hz were excluded in analysis because frequency 1,000Hz was not recognized as a vibration sense. Mean and standard deviation(S.D.) of the VPTs in the both hands measured at 250Hz were 19.9+/-6.7dB, 21.0+/-7.3dB, respectively and at 500Hz were 33.6+/-8.3dB, 34.9+/-8.1dB, respectively. Both mean and S.D. tended to be lower at 250Hz than 500Hz, and mean differences of VPTs between the left and the right hand at the both frequencies appeared statistically significant (p<0.01). VPTs were significantly correlated with each other (p<0.01). Age was positively correlated(p<0.001) with VPTs and education was negatively(p<0.01). Multiple regression analysis showed that age was the only factor influenced on VPT. These results suggest that, when using the bone vibrator of audiometer for measurement of VPT, the frequency 250Hz as a testing frequency may be more useful than frequency 500Hz, and VPT should be measured on both hands.

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A Study on Working Environment and Health Status of Workers in Some Dyeing Factories: No Suk Ki, Chung Ja Ahn, Dai Ha Koh, Jung Sang Lee, Yoo Yong Lee, Jae Hyung Lee, Jung Ho Youm, Yong Il Shin; Korean Journal of Occupational and Environmental Medicine 1994;6(1):3-16. Published online February 28, 1994; DOI: https://doi.org/10.35371/kjoem.1994.6.1.3

Abstract PDF: This study was carried out to evaluated the actual conditions of working environment and health status of workers and search more effective health management method of workers in some dyeing factories. This study was conducted from April 1 to October 30, 1992, for 426 workers in two dyeing factories and an electric wire making factories. Among 324 workers in two dyeing factories, 57.5% were male and 42.5% were female. Most of the engaged workers had less than 2 years of working carrier and aged 30 years or below. The used chemical substances exceeding 1 ton per a month were sodium hydroxide(NaOH), hydrogen peroxide(H2O2), sodium chlorite(NaClO2), sodium sulfate(Ma2SO4), sodium carbonate(Na2CO3), and sodium hydrosulfite(Na2S2O4). The used chemical dyes exceeding 100kg per a month were suncion blue H-ERD, levafix brilliant red E-4BA, suncion yellow E-3G, and remazol black B. As the allowable exposure time by governmental threshold limit valuses to industrial noise levels in 90 dBA for 8 hours. Average noise levels of the individual plants were ranged from 75 to 95 dB (A). The TLV for total cotton dust in 2.0mg/m3. Average cotton-dust concentration in these working environmental air were ranging from 0.2-1.3mg/m3. The TLV chlorine, acetic acid and formic acid are 1 ppm, 10 ppm & 5ppm, respectively. The range of chlorine, and acetic and formic acid concentration in these working environmental air were detected 0.2-1.6 ppm and at trace level. The accident by chemical substances and dyes was not found on these working environment. From the physical examination and Todai Health Index scores results, there was no significant correlation between the used chemical substances and the diseases, such as bronchial asthma, other hyperreactive respiratory diseases and contact dermatitis. It was suggested that long term survey should be performed to detect the occupational health problem on these working environment.

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