376. Ability of Minor Increases in Indoor Shooting Range air Velocities to Reduce Lead Concentrations in the Breathing Zone of Small-Arms Shooters

2004 ◽  
Author(s):  
D. Lillquist ◽  
B. Craig
Keyword(s):  
Breathing Zone ◽  
Shooting Range ◽  
Small Arms

Chemical Leaching of Antimony and Other Metals from Small Arms Shooting Range Soil

2012 ◽  
Vol 224 (1) ◽  
Author(s):  
Stéphanie Lafond ◽  
Jean-François Blais ◽  
Richard Martel ◽  
Guy Mercier
Keyword(s):  
Shooting Range ◽  
Small Arms ◽  
Chemical Leaching ◽  
Shooting Range Soil

Characteristics of Heavy Metals Contamination and Distribution in Shooting Range: A Case Study

2011 ◽  
Vol 414 ◽  
pp. 132-138 ◽  
Author(s):  
Yong Bing Zhu ◽  
San Ping Zhao ◽  
Xiao Dong Liu
Keyword(s):  
Heavy Metals ◽  
Site Investigation ◽  
Shooting Range ◽  
Small Arms ◽  
Pollution Characteristics ◽  
Different Depths ◽  
Heavy Metals Pollution ◽  
Shooting Range Soil ◽  
Positive Correlations

In order to study heavy metals’ pollution characteristics in soil of a small arms shooting range, soil samples at surfaces and different depths were collected from a shooting range located in suburb of Beijing and analyzed for heavy metals (Pb、Cd、Cu、Zn、P、As、Hg and Sb). Site investigation results showed that the soil in the shooting range was seriously polluted by Pb bullets, and there are positive correlations between total concentrations of Hg, Cu, Pb, Zn, Sb and Pb in soil particles less than 2mm, indicating soil heavy metals’ combined pollution characteristics.

CHANGE OF ACCURACY DUE TO BARRELS INTERCHANGEABILITY IN THE MODULAR SMALL ARMS SYSTEM

2019 ◽  
Vol 150 (2) ◽  
pp. 105-117
Author(s):  
Dawid Goździk ◽  
Jacek Kijewski ◽  
Wojciech Koperski ◽  
Przemysław Kupidura ◽  
Mirosław Zahor
Keyword(s):  
Mean Value ◽  
Field Conditions ◽  
Shooting Range ◽  
Small Arms ◽  
Basic Assumptions ◽  
The Mean

Rifles of MSBS-5.56 system are equipped with a mechanism for an easy barrel changing, what was one of basic assumptions of system modularity. But barrel changing, although possible even under field conditions (with the use of basic tools), causes displacement of shot pattern mean point. Due to the fact that the sights are mounted on the upper receiver, it is important that this displacement is as small as possible. In order to determine the mean value of displacements for the pattern mean point and the construction parameters affecting them, a series of firings were performed using a laboratory stand and shooting range. Both repeatability of fixing the same barrel (ex-changeability) and other barrels (inter-changeability) were taken into account.

scholarly journals Particle Concentrations in Occupational Settings Measured with a Nanoparticle Respiratory Deposition (NRD) Sampler

2018 ◽  
Vol 62 (6) ◽  
pp. 699-710 ◽  
Author(s):  
Larissa V Stebounova ◽  
Natalia I Gonzalez-Pech ◽  
Jae Hong Park ◽  
T Renee Anthony ◽  
Vicki H Grassian ◽  
...  
Keyword(s):  
Mass Concentration ◽  
Metal Particles ◽  
Heavy Vehicle ◽  
Breathing Zone ◽  
Shooting Range ◽  
Diffusion Stage ◽  
Respiratory Deposition ◽  
Iron Foundry ◽  
Respirable Mass Concentration ◽  
Occupational Settings

Abstract There is an increasing need to evaluate concentrations of nanoparticles in occupational settings due to their potential negative health effects. The Nanoparticle Respiratory Deposition (NRD) personal sampler was developed to collect nanoparticles separately from larger particles in the breathing zone of workers, while simultaneously providing a measure of respirable mass concentration. This study compared concentrations measured with the NRD sampler to those measured with a nano Micro Orifice Uniform-Deposit Impactor (nanoMOUDI) and respirable samplers in three workplaces. The NRD sampler performed well at two out of three locations, where over 90% of metal particles by mass were submicrometer particle size (a heavy vehicle machining and assembly facility and a shooting range). At the heavy vehicle facility, the mean metal mass concentration of particles collected on the diffusion stage of the NRD was 42.5 ± 10.0 µg/m3, within 5% of the nanoMOUDI concentration of 44.4 ± 7.4 µg/m3. At the shooting range, the mass concentration for the diffusion stage of the NRD was 5.9 µg/m3, 28% above the nanoMOUDI concentration of 4.6 µg/m3. In contrast, less favorable results were obtained at an iron foundry, where 95% of metal particles by mass were larger than 1 µm. The accuracy of nanoparticle collection by NRD diffusion stage may have been compromised by high concentrations of coarse particles at the iron foundry, where the NRD collected almost 5-fold more nanoparticle mass compared to the nanoMOUDI on one sampling day and was more than 40% different on other sampling days. The respirable concentrations measured by NRD samplers agreed well with concentrations measured by respirable samplers at all sampling locations. Overall, the NRD sampler accurately measured concentrations of nanoparticles in industrial environments when concentrations of large, coarse mode, particles were low.

Small Arms Survey 2014

2009 ◽  
Author(s):  
Small Arms Survey
Keyword(s):  
Small Arms
Sign in / Sign up

Export Citation Format

Share Document