File:Oil-like residue on cavern wall.jpg
Original file (4,000 × 3,000 pixels, file size: 4.2 MB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionOil-like residue on cavern wall.jpg |
English: Oil-like residue on a wall of a former limestone quarry cavern in Ohio, being used as a storage warehouse for painted and sculptural artwork.
GC-MS analysis resulted in a few small hydrocarbon peaks likely in the range of C20 and greater, and a few small peaks potentially indicating polycyclic hydrocarbons with molecular weights greater than 300 atomic mass units. This photograph was taken during a Health Hazard Evaluation, a NIOSH program by which employees, union officials, or employers can request an evaluation of possible health hazards at their workplace at no cost to them. |
Date | |
Source | https://www2a.cdc.gov/hhe/search.asp |
Author | Scott E. Brueck, Duane R. Hammond, Leonard M. Zwack, Sarah Hatcher |
This file has been extracted from another file : 2023 Evaluation of Occupational Exposures and Indoor Environmental Quality in an Underground Cavern Workplace.pdf |
Licensing
[edit]Public domainPublic domainfalsefalse |
This image is a work of the National Institute for Occupational Safety and Health, part of the Centers for Disease Control and Prevention in the United States Department of Health and Human Services, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 06:10, 31 May 2024 | 4,000 × 3,000 (4.2 MB) | John P. Sadowski (NIOSH) (talk | contribs) | Uploaded a work by Scott E. Brueck, Duane R. Hammond, Leonard M. Zwack, Sarah Hatcher from https://www2a.cdc.gov/hhe/search.asp with UploadWizard |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Panasonic |
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Camera model | DMC-FH1 |
Exposure time | 1/30 sec (0.033333333333333) |
F-number | f/2.8 |
ISO speed rating | 400 |
Date and time of data generation | 09:50, 11 October 2018 |
Lens focal length | 5 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Ver.1.0 |
File change date and time | 09:50, 11 October 2018 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 09:50, 11 October 2018 |
Meaning of each component |
|
Image compression mode | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Flash |
Flash | Flash fired, auto mode |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 28 mm |
Scene capture type | Standard |
Scene control | High gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |