MSHA's Revised Quartz Enforcement Program
نویسنده
چکیده
THOMAS F. TOMB, PAULS. PAROBECK, and ANDREW J. GERO Pittsburgh Health Technology Center, Mine Safety and Health Administration was greater than five percent. Such a formula was developed and is included in Parts 70.101, 71.101, and 90.101 of Title 30, Code of Federal Regulations (CFR). These regulations state that: "When the respirable dust in the mine atmosphere of the active workings contains more than five percent ---------------------1 quartz, the operator shall continuously maintain the average concentration of respirable dust ... at or below a concentra-
منابع مشابه
The Effects of High Visibility Enforcement on Driver Compliance to Pedestrian Yield Right-of-Way Laws
This study examined the effects of a one-year high visibility pedestrian right-of-way enforcement program on yielding to pedestrians at uncontrolled crosswalks, some of which received enforcement and some of which that did not. The program included four 2-week enforcement waves, supported by education and engineering components that increased the visibility of enforcement. The study produced si...
متن کاملQuartz: Supporting QoS-Constrained Services in Heterogeneous Environments
This paper describes an architecture that addresses common problems found in systems supporting QoS specification and enforcement, such as lack of flexibility and expressiveness in the specification of requirements and dependencies on specific platforms. The Quartz QoS architecture aims to solve these problems by adopting a highly extensible and platform-independent design.
متن کاملDew point measurement using a sensitive circuit type of dew point sensor
Received: 13 Mar. 2012; Revised 25 Jul. 2012; Accepted 04 Aug. 2012 Received: April 8, 2012; Revised May 4, 2012; Accepted June 6, 2012 Abstract: Aiming at the problem of atmospheric humidity measurement, this paper proposes a method to measure dew point based on sensitive circuit for the first time. We use the quartz crystal in the Colpitts circuit as the humidity sensitive element. Since the ...
متن کاملShock Vaporization of Silica and the Thermodynamics of Giant Impact Events Online Auxiliary Materials
Table S.1 Summary of variables and annotations in the Auxiliary Materials. Table S.2 Transition enthalpies for quartz to fused quartz and stishovite. Table S.3 Kieffer model parameters for stishovite. Table S.4 Grüneisen parameter estimates for silica liquid. Table S.5 Revised liquid–vapor curve for silica.
متن کاملQuartz: A QoS Architecture for Open Systems
This paper describes an architecture that provides support for quality of service (QoS) specification and enforcement in heterogeneous distributed computing systems. The Quartz QoS architecture has been designed to overcome various limitations of previous QoS architectures that have constrained their use in heterogeneous systems. These limitations include dependencies on specific platforms and ...
متن کامل