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[Healing and helping in Hallstatt--on the medical history of mining town in Salzkammergut].

The medical care practiced at Hallstatt was specifically influenced by its salt mine, well known since prehistoric times, and by the isolated location of this place lying on a lake as well as in the mountains. Since the 16th century the Hallstatt saltworks had a hospital, with a special isolation ward since 1772. In addition to it, a small hospital for infectious diseases was opened at the beginning of the 20th century. The barber-surgeons, whose names have been known since the 17th century, and later on the university-graduated doctors had to do their work without any outside help and moreover, they had to supply their patients with necessary medicaments. In her own house, the last local midwife used to offer delivery and lying-in rooms for women. The mine rescue service (since 1945), the mountain rescue service (since 1923), the water rescue service (since 1960) and the Red Cross (since 1978) have been playing an important part preparing the work of the local doctors. Paleoparasitological examinations of human excrements found in collapsed prehistoric tunnels proved that the miners had suffered from whip worms and eel worms. Contrary to the badly preserved skeletons found in the prehistoric burying place on the Hallstatt Salzberg, the human remains in the Hallstatt charnel house made anthropological examination possible.

Austria↗

[The debut of Jennerian vaccination in the mining regions of Transylvania].

The first attempts at vaccination by Jenner's method in Transylvania (Romania) were made in 1801; vaccination became compulsory in 1808. By researching the mining archives, details about the evolution of vaccination activities were found. The most important are: the initiative of the surgeon Peter Molnar from Sacaramb (June 1801), the first vaccinations performed by the chief medical officer of the mining area (November-December 1801), the consistent reporting of vaccination, payment of the vaccinator surgeons, vaccination promotion and means of providing vaccination material.

Communicable Disease Control↗

A long-term water quality management model for a lignite mining affected river catchment area.

The paper presents a program system which is used for long-term planning and control of water management of an open-cast mining affected river catchment area. This contribution gives insight into the development of a coupled stochastic water management - water quality model. Simplified algorithms to describe water quality are presented. Finally, applicability of the model is verified by some results which are interpreted with regard to the special water quality situation in the Lusatian mining district.

Coal↗

Geochemistry of acid mine contamination-aquifer interactions.

The Pinal Creek Basin near Globe, Arizona, is an example of a groundwater/surface water system contaminated by wastes from historic metal mining practices. Acidic mining wastes that have leached into the regional aquifer have come in contact with alluvial sediments, dissolving manganese oxides and precipitating iron sulfato-hydroxides. Manganese is reoxidized in sediments of a perennial stream (Pinal Creek) formed as the aquifer thins and groundwater is forced to land surface. Iron and manganese in the system are inextricably linked through redox couples. These interactions, which produce reaction rates varying by orders of magnitude and non-stoichiometric release of manganese, are poorly understood. We have designed a flow-through reaction cell to obtain in situ real time X-ray adsorption spectroscopy (XAS) data during geochemical reactions. By coupling solution chemistry data with spectroscopic measurements, we were able to show that the spinel mineral, jacobsite, forms as a metastable intermediate phase during the reductive dissolution of manganese oxide (MnO2) by ferrous iron (Fe(II)). The production of Fe(III) followed by the precipitation of ferric hydroxides and the formation of the jacobsite phase, were responsible for reducing the rate of the reaction as time progressed. Laboratory studies have determined that Mn-oxidation in stream sediments increases Co, Ni, and Zn loading through a variety of processes, including oxidation, co-precipitation, solid solution formation, structural exchange, and/or sorption. This information provides a more complete picture of the controls on metal transport and attenuation in the Pinal Creek Basin.

Acids↗

[Consideration for ecological planning in mining areas].

On the basis of summarizing the status and trend of domestic and overseas ecological planning research, the necessity and significance of ecological planning research in mining areas were analyzed and its characteristics, research objectives, contents and methods were discussed. It is pointed out that establishing the theory and methodology of ecological planning in mining area is not only the requirement of their sustainable development, but also the requirement of active participation and cooperation of the researchers from different disciplines.

Conservation of Natural Resources↗

DNA damage in birds after the mining waste spill in southwestern Spain: a Comet assay evaluation.

In April 1998, an ecological disaster resulting from a massive toxic spill of mining acid waste rich in heavy metals posed a serious threat to the Doñana National Park in southwestern Spain. This especially important protected area is the nesting and breeding site for many endangered bird species; white storks (Ciconia ciconia) and black kites (Milvus migrans) are considered the more representative. The suitability of the Comet assay as a biomarker for genotoxic analysis in environmental biomonitoring has been recently validated in studies using different sentinel organisms such as fish, amphibians, rodents, or mollusks. Birds preying on a variety of invertebrate and vertebrate species in the marshlands are appropriate for evaluating the potential deleterious effects of the toxic spill on wildlife of the Dofiana area. Our study on wetland birds high on the aquatic trophic chain sampled within a few months after the toxic spill in the area around Doñana National Park has shown the accumulation of heavy metals. Fourteen months after the mine waste spill, blood samples from white storks and kites collected in the neighborhood of the park and from control birds at reference areas for comparison were examined by fluorescence image analysis after lymphocyte isolation, and by subsequent alkaline single-cell gel (SCG) electrophoresis, known as the Comet assay. Our results indicate that the exposed birds had a significantly increased level of genotoxic damage compared with control animals from noncontaminated locations.

Accidents, Occupational↗

[Changes in the blood concentrations of interleukins and electrolytes in miners working in deep coal mines].

Miners working in deep coal mines, engaged in hard physical work under most harsh mine conditions demonstrate a striking imbalance between pro- and antiinflammatory cytokines and a rise in the blood levels of electrolytes K+ and Na+ as well. The analysis performed revealed a direct correlation between the level of blood concentration of IL-6 and that of K+, Na+.

Adult↗

[Ecological reconstruction of large opencut coal mine through ectomycorrhizal biotechnology].

Pot experiment with discarded greenish mudstone from large opencut coal mine as test soil was conducted to study the application of ectomycorrhizal fungi in the ecological reconstruction of fragile ecological belt of large opencut coal mine of Huolinhe region, Inner Mongolia. The result showed that after the greenish mudstone was inoculated with ectomycorrhizal fungi, the rates of seedling infection and survival were 1.21-2.78 higher in treatment with no fertilizer application than in that with fertilizer application. The test ectomycorrhizal inoculum 010, A and B had a stronger regulation ability in infertile and low penetration coefficient soil. The ammonification of the mudstone could improve its physical and chemical properties, but shorten the survival duration of seedling on account of the accumulation of ammonia and phosphorus in it.

Ammonia↗

[Arsenic exposure of residents in areas near Shimen arsenic mine].

OBJECTIVES: To investigate the levels of arsenic exposure of residents in the arsenic polluted areas near an arsenic mine. METHODS: To analyse the arsenic levels in environmental samples and hair in the polluted areas and a control area. RESULTS: In three villages of the polluted areas, arsenic levels in soil were 84.17 to 296.19 mg/kg, in river water 0.5 to 14.5 mg/L, in well water and tap water lower than 0.05 mg/L, in rice 0.196 to 0.620 mg/kg. Arsenic intake amounted 195 to 1129 micrograms/day. In the hair, the arsenic contents were from 0.972 to 2.459 micrograms/g, increasing with aging. CONCLUSION: In the areas near Shimen arsenic mine, arsenic pollution was serious. The levels of arsenic exposure of residents were equal to or even over that of the severe cases of chronic arsenic poisoning reported domestically and abroad.

Adult↗

[Analyses of 1003 death cases of pneumoconiosis from Xuzhou coal mines].

In order to investigate the general rules concerning attack, development and death of pneumoconiosis for providing scientific evidences for preventing, 1003 death cases of pneumoconiosis from Xuzhou coal mine factory were analyzed. Results showed that: (1) The death causes was in the sequence of pneumoconiosis, lung tuberculosis, chronic cor pulmonale, pulmonary carcinoma, etc., and changed into pneumoconiosis, chronic cor pulmonale, pulmonary carcinoma, cerebrovascular accident, etc. since 1990s. Lung tuberculosis would no longer be the main death cause of pneumoconiosis; (2) The accumulative death percentage of the death cases about pneumoconiosis was correlated to the length of dust exposure. The accumulative death percentage increased rapidly in a beeline within 5 to 20 years; (3) The length of service of episode and mean life of digging or mining workers were significantly shorter than that of others (P < 0.01); (4) The mean life and the course of diseases became more and more longer than ever since 1970s. Therefore, it can be concluded that the key for preventing and controlling pneumoconiosis was to decrease the concentration of dust in workplace and to limit the length of service of dust exposure.

Adult↗

[Various ecological problems related to mining and processing of serpentine. Evaluation of non-occupational exposure of the population of Nasławice to fibrous mineral dust].

Non-occupational exposure of the population living in the vicinity of the serpentine mining and processing mill in Nasławice was assessed. The evaluation was based on the phase analysis and determination of respirable mineral fibres content in the samples of dust fall and soil in the fields nearby the mine, as well as on the in-door and out-door measurements of airborne fibres concentration. All soil samples contained antigorite--a mineral the structure of which is close to that of chrysotile asbestos add exhibiting high biological aggressiveness. The respirable mineral fibres content in the dust fall-out and in the soil ranged from 98,000 to 480,000 per 1 mg and from 48,000 to 122,000 per 1 mg, respectively, whereas the airborne concentrations were from 2 to 1540 fibres/l (outdoor) and from 4 to 7 fibres/l (indoor). The fall of dust in the years 1989-1990, recorded at all measuring points, exceeded 200,000 kg/km2 yearly (admissible value). The airborne concentrations of respirable mineral fibres were also higher than the admissible value (1 fibre/l of the air). The results obtained indicate that the exposure of the population in Nasławice to mineral fibrous dusts has significantly exceeded to maximum admissible concentrations established for non-occupational exposure.

Air Pollutants↗

The effects of a roster schedule change from 8- to 12-hour shifts on health and safety in a mining operation.

The current study examined the impact on employee health and safety of changes to the roster system of an Australian coal mine. Absenteeism and incident frequency rate data were collected over a 33-month period that covered three different roster schedules, an 8-hour system, a 12-hour system and a 12-hour system incorporating unregulated overtime. The first change was implemented after consultation with the employee population, whereas the second was not. There were no significant negative effects of the 12-hour pattern, when compared to the 8-hour system. However, when unregulated and excessive overtime was introduced as part of the second round of changes, absenteeism rates were increased in one sector of the mine. The maintenance sector was subject to a significant increase in absenteeism rates, which may have been attributable to the excessive overtime required of the workers in that area. It is important that overtime be strictly monitored and that the employee population are involved in the process of roster change.

Absenteeism↗

[Not a tourniquet, but compressive dressing. Experience from 68 traumatic amputations after injuries from mines].

In autumn 1991, 68 patients with traumatic amputations after injuries caused by mines were evacuated to the United Nation's field hospital in the demilitarized zone between Iraq and Kuwait. Most were seen during a three week period when civilians harvested mines. During the first days of this period, continuous bleeding distally to applied tourniquets was frequently observed. Orders were issued to remove any tourniquets and cover the wounds with a very tight elastic bandage. Prehospital intravenous infusions were decreased. Three out of 18 patients died prior to the change of routine compared with one out of 50 afterwards. The new directives led to visibly less haemorrhage. Haemoglobin on admission was mean 8.6 g/100 ml during the first part of the observation period compared with mean 10.5 g/100 ml with the new routine. 23 patients received blood transfusions. Fewer patients needed transfusions after the use of tourniquets was discontinued. A tourniquet should not be used in the treatment of bleeding extremity injuries. In extensive crush injuries and traumatic amputations a compressive dressing should be used, applied from the end of the extremity in a proximal direction.

Adult↗

[Disease patterns during the first year in the arctic mining industry].

In the zinc, lead and silver ore mine of Maarmorilik, Greenland 1,061 episodes of illness in the first year of employment were studied in 421 persons. Despite the fact that about 80% of the employees were of Scandinavian origin, the patterns of illness were considerably different from the health problems in primary health care units in Denmark. Urogenital problems were the only group of illnesses representing overweight of multiple contact episodes. All other groups of diagnoses were dominated by episodes of single contact. Dental problems, traumatic and urogenital episodes appeared more frequently compared to Danish primary health care units. The lower frequency of traumatic episodes in women reflected their employment in service jobs only. Despite a health examination before employment the total amount of episodes of illness corresponded to that of primary health care units in Denmark, and the age specific contact rate for males was higher than in other morbidity studies from Greenland. Possible explanations were: sick leave required documentation of the doctor, the workload was heavy and prolonged, the spare time possibilities were few, the buildings were inadequate, the employees were isolated from their families for months and the consumption of alcohol was considerable. Because the doctor was the only person with health education in the mining village, knowledge about dental treatment and considerable experience in traumatology and diagnosis of venereal disease were necessary.

Arctic Regions↗

Vectors and malaria transmission in a gem mining area in Sri Lanka.

Anopheline vectors of malaria were studied in the Kaluganga gem mining area in the dry zone of central Sri Lanka. Adult mosquitoes were collected using cattle-baited huts and nets, pyrethrum spray sheets, window exit traps and light traps and partial and full-night human landing collections over a period of 17 mo. The collections produced a total of 13,591 anophelines belonging to 14 species. Using ELISA for circumsporozoite proteins of Plasmodium vivax and P. falciparum, Anopheles culicifacies, An. subpictus and An. varuna were incriminated as malaria vectors. For these species, estimated entomological inoculation rates were 5.9, 5.7, and 6.7 infective bites per person per year, respectively. An. culicifacies and An. subpictus show endophagic behavior, while An. varuna were exophagic. Mosquito larval surveys indicated that the gem pits, when filled with water, contributed 60% of the larvae of the three vector species. Parasitological data were collected by two mobile malaria clinics and by hospitals. The incidence rates of fever per 1,000 person-years with P. vivax and P. falciparum were 122.8 and 26.1 respectively, with a significantly higher rate in males over 15 years of age than in females of that age. Changes in the environment due to gem mining may have caused the emergence of An. subpictus and An. varuna as significant malaria vectors. The conventional view of An. culicifacies being the main vector of malaria in Sri Lanka needs to be reconsidered when planning the vector control programs in this study area. Due to migration of malaria patients, there is a likelihood the disease could be spread to other parts of the island. Therefore, action should be taken to eliminate these pits as breeding sites.

Animals↗

[Occupational dust exposure and chronic obstructive bronchopulmonary disease. Etiopathogenic approach to the problem of compensation in the mining environment].

In order to support the hypothesis of a causal relationship between exposure to respirable coal mine dusts and chronic obstructive pulmonary disease (COPD), investigations were performed to assess the biological disorders affecting the distal air spaces in coal workers with pneumoconiosis. Broncho alveolar lavage studies demonstrated a continual influx of mononuclear phagocytes loaded with mineral particles, associated with neutrophils in small number, in smokers as well as in non smokers. The alveolar macrophages were in activated state, spontaneously releasing various mediators, particularly interleukin I, Tumor necrosis factor alpha and superoxide anion. So, they appeared as responsible both for a chronic inflammation of the distal airways and for a protease-antiprotease imbalance leading to pulmonary emphysema, partly due to an oxidative inactivation of alpha 1 antiprotease inhibitor. In spite of additive effect of tobacco smoke, as shown by longitudinal studies of lung function in coal miners, it is now reasonable to consider the evidence of association between coal mine exposure and COPD to be sufficiently strong to infer causality, and to justify compensation for COPD in coal miners with or without radiological evidence of pneumoconiosis.

Coal↗

[Some peculiarities of vibration diseases in manganese mine workers].

Vibration disease is one of the leading pathology in the structure of occupational diseases. The aim of our investigation was to study the peculiarities of vibration disease in manganese mine workers Georgia (dependence on the degree of disease, duration of vibration factors, the age and sex) in order to elaborate the complex of medico-preventive and rehabilitation measures. Results of the study showed that clinical picture of the disease was characterized by different damage syndromes of central, peripheral and vegetative nerve systems. On the basis of the investigation the complex of medico-preventive and rehabilitation measures was done for Chiatura manganese mines medical stations.

Adult↗

[Impact of coal mining on bird distribution in Upper Angara Region].

Bird distribution in the first half of summer was analyzed in the areas of past and present opencast coal mining in the Upper Angara Region. Most species preferred forest habitats even with traces of industrial impact. Artificial water bodies introduced as a result of coal mining increase the diversity of bird species.

Animals↗