Survey of Noise Exposure and Background Noise in Call Centers Using Headphones
N. Trompette and J. Chatillon
1. This study investigates call center operators' exposures to
noise. Which of the following components is the major
contributor to the operators' exposures?
a. Phone calls
b. Background speech
c. Ring tones
2. Background noise and headset volume setting are directly
related. True or False?
True
False
Monitoring Diesel Particulate Matter and Calculating Diesel Particulate Densities Using Grimm Model 1.109 Real-time Aerosol Monitors in Underground Mines
Kyle C. Kimbal, Leon Pahler, Rodney Larson and Jim VanDerslice
3. The variance of the calculated diesel particulate densities
by particle diameter size supports the current understanding
that diesel emissions are a mixture of particulate aerosols and
a complex host of gases and vapors limited to elemental and
organic carbon. True or False?
True
False
4. The Grimm instrument may rapidly and accurately measure
underground mine workplace concentrations but measurements
are not to be used as MSHA compliance estimators. True
or False?
True
False
Hexavalent Chromium Compounds in the Workplace: Assessing the Extent and Magnitude of Occupational Exposure in Italy
Alberto Scarselli, Alessandra Binazzi, Davide Di Marzio, Alessandro Marinaccio and Sergio Iavicoli
5. Which of the following compounds has the highest geometric
mean of Cr(VI) concentration?
a. Sodium dichromate
b. Strontium chromate
c. Sodium dichromate dihydrate
d. Chromium trioxide
e. Zinc chromate
6. Treatment and coating of metals is the economic sector
with the highest value of workers potentially exposed to
Cr(VI). True or False?
True
False
Ethnic and Gender Differences in Farm Tasks and Safety Practices Among Rural California Farm Youth
Stephen A. McCurdy and Jonathan A. Kwan
7. In comparison to White/Other youth, Hispanic youth, on
average, worked
fewer hours per year, first began most farm
tasks at an older age, were less likely to use machinery, and
were more likely to use task-appropriate safety measures.
True or False?
True
False
8. Simply recommending safety measures is likely to be
sufficient for increasing their use. True or False?
True
False
Evaluation of the Benefit of the User Seal Check on N95 Filtering Facepiece Respirator Fit
Dennis J. Viscusi, Michael S. Bergman, Ziqing Zhuang and Ronald E. Shaffer
9. What is the frequency with which a user seal check must
be performed for a tight fitting respirator in terms of the U.S.
Occupational Safety and Health Administration's Respiratory
Protection standard (29 CFR 1910.134)?
a. Each time the user puts on the respirator
b. Once a day
c. Whenever the user feels like it
d. Never, a user seal check is optional
10. Previous studies have shown that the user seal check is
capable of functioning as an alternative to performing a U.S.
Occupational Safety and Health Administration 29 CFR
1910.134 required annual or initial respirator fit test. True
or False?
True
False
Retrospective Assessment of Occupational Exposure to Whole Body Vibration for a Case-Control Study
M. Anne Harris, Peter A. Cripton and Kay Teschke
11. Direct workplace measurements of individual whole body
vibration exposures are practical for studies of health effects
arising after many years of exposure. True or False?
True
False
12. Which of the following was not a source of occupational
whole body vibration considered by this study?
a. snowmobile
b. forklift
c. electric drill
d. light truck
Amphibole Asbestos in Tree Bark – A Review of Findings for this Inhalational Exposure Source in Libby, Montana
Tony J. Ward, Terry M. Spear, Julie F. Hart, James S. Webber and Mohamed I. Elashheb
13. Occupational exposure to Libby amphibole has not been
associated with:
a. Asbestosis
b. Lung cancer
c. Sarcoidosis
d. Pleural cancer
14. Libby's designation as a public health emergency represents
only the second time that USEPA has made this designation
under CERCLA. True or False?
True
False
