"Correlation of dust-count results by Zeiss konimeter and

"Correlation of dust-count results by Zeiss konimeter and

In this modern age, the scientific and technological developments have advanced mechanized mining to the status wherein the attendant dust problems have reached very serious hazard proportions. The significant roles, which have been perfected for the Zeiss konimeter and the midget impinger, in evaluating dust concentrations and thereby revealing possible improvements in making the

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Definition of konimeter

Definition of konimeter

Definition of konimeter. Apparatus used to measure dust in mine atmosphere. A measured volume of air is drawn through a jet so as to impinge on a glass surface coated with glycerin jelly. The adherent dust is then examined and the particles are counted under the microscope. Also called Zeiss konimeter. See Also: dust sampling

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Limitations to the Use of the Konimeter

Limitations to the Use of the Konimeter

During earlier investigations in coal mines the author and his colleagues observed that there were limitations to the use Of the konimeter for sampling air-borne coal dust. The konimeter has been used for dust investigations in British mines, and is still being used. Chubb remarks that if the main object of its use is to estimate the free silica hazard the instrument may be suitable, but that

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Long-Period Dust Sampling in a Colliery. 2. Validity of

Long-Period Dust Sampling in a Colliery. 2. Validity of

After their consideration of the P.R.U. Hand Pump as a coal face dust sampler [this Bulletin, 1958, v. 33, 668] the authors continue with a critical assessment of the British Konimeter as a dust sampling instrument in preparatory work, where both coal and rock may be present. They show that with the standard technique of counting, the dust spot on the disk is often decentred, leading to

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Konimeter | Article about konimeter by The Free Dictionary

Konimeter | Article about konimeter by The Free Dictionary

An air-sampling device used to measure dust as in a cement mill or a mine; a measured volume of air drawn through a jet impacts on a glycerin-jelly-coated glass surface; the particles are counted with a

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Silica Exposure and Silicosis among Ontario Hardrock

Silica Exposure and Silicosis among Ontario Hardrock

ter, an instantaneous dust sampler having a sampling duration of approximately one-third of a second. The collected dust sample was counted under a microscope and expressed as the number of particles per unit volume of air (particles per cubic centimeter). The ear-liest available konimeter dust data in Ontario date back to 1940. However, the

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Respirable Dust and Respirable Silica Exposure in Ontario

Respirable Dust and Respirable Silica Exposure in Ontario

The nylon cyclone is shown to be an acceptable respirable dust sampler for the Ontario hard-rock mining environment. ... In the uranium mine, the Witwatersrand konimeter gave a 25% lower

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AN EVALUATION OF KONIMETER PERFORMANCE—II. A

AN EVALUATION OF KONIMETER PERFORMANCE—II. A

Nov 01, 1987 Abstract. Two konimeters, the Devers and the Witwatersrand, with and without a size selecting pre-impactor, were compared with a Gathercole konimeter as part of

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Methods of Aerosol Measurement before the 1960s

Methods of Aerosol Measurement before the 1960s

konimeter (Zeiss, 1950), shown in Fig. 3, could collect 30 dust samples on a single glass disk, which was rotated to permit the immcdiate examination of the spots under the built-in microscope. Cascade Impactors An important improvement in the field of dust sampling was provided by an instrument

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Department of Mining Engineering - IIT (ISM) Dhanbad

Department of Mining Engineering - IIT (ISM) Dhanbad

Real time aerosol monitor, gravimetric dust sampler, personal dust sampler, konimeter with projector for studying the air borne respirable dust concentration in mine air. Digital sound level meter with recorder, for studying noise levels in mines and mining areas

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Konimeter Medical Definition | Merriam-Webster Medical

Konimeter Medical Definition | Merriam-Webster Medical

Medical definition of konimeter: a device for estimating the dust content of air (as in a mine or a cement mill)

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University of Wisconsin–Madison

University of Wisconsin–Madison

operations in the mines were made using the konimeter. GCA respirable dust monitoring The survey of environmental conditions in 12 operating mines was made in 1976. This was a special sunzey, where more than 400 operations were sampled with both the GCA direct reading gravimetric dust sampler and the konimeter

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Cross-Sectional Silica Exposure Measurements at Two

Cross-Sectional Silica Exposure Measurements at Two

Reported dust exposure measurements at the two mines were of a cross-sectional design. At each mine, bulk and personal respirable dust samples were collected at scheduled areas. Scheduled areas are production areas of the mine where mining regulations of the Zambian mining regulatory authorities apply. In these areas, the main production

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Retrospective exposure assessment for respirable and

Retrospective exposure assessment for respirable and

Dec 11, 2007 Objectives. Starting shortly after the reunification of Germany and lasting up to the end of the 1990s, an extensive series of retrospective exposure investigations for the East German uranium mining industry was performed in order to provide information about the exposure situation of the miners towards respirable dust, inhalable dust, crystalline silica and heavy metals

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konimeter dust sampler mining - Escort

konimeter dust sampler mining - Escort

konimeter dust sampler mining. Definition of konimeter Apparatus used to measure dust in mine atmosphere. A measured volume of air is drawn through a jet so as to impinge on a glass surface coated with glycerin jelly. The adherent dust is then examined and the particles are counted under the microscope. Get Price List Chat Online

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Konimeter Dust Sampler Mining

Konimeter Dust Sampler Mining

Konimeter Dust Sampler Mining. Konimeter Dust Sampler Mining. IIT ISM Dhanbad. Real time aerosol monitor, gravimetric dust sampler, personal dust sampler, konimeter with projector for studying the air borne respirable dust concentration in mine air. Digital sound level meter with recorder, for studying noise levels in mines and mining areas. Live Chat

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konimeter dust sampler mining

konimeter dust sampler mining

Mar 16, 2020 The konimeter has coal mine dust personal sampler which was extensively used in USA coal mines in conjunction with a 10 mm nylon cyclone Read More MSHA Course of Instruction Certified Person Sampling

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Dust Sampling Instrumentation and Methods

Dust Sampling Instrumentation and Methods

Sep 28, 2010 mining • Sampling methods to quantify dust sources . Dust Standards for Metal/Nonmetal Mining (Federal Mine Safety and Health Act of 1977) 10.0 mg/m 3 total airborne dust . If silica 1%: respirable standard = 10 / (% silica + 2) Gravimetric Dust Sampler

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