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  2. Construction site safety - Wikipedia

    en.wikipedia.org/wiki/Construction_site_safety

    Site preparation includes removing debris, leveling the ground, filling holes, cutting tree roots, and marking gas, water, and electric pipelines. [63] Another prevention method on the construction site is to provide a scaffold that is rigid and sufficient to carry its own weight plus four times the maximum intended load without settling or ...

  3. Environmental impact of fracking in the United States

    en.wikipedia.org/wiki/Environmental_impact_of_f...

    Environmental impact of fracking in the United States has been an issue of public concern, and includes the contamination of ground and surface water, methane emissions, [1] air pollution, migration of gases and fracking chemicals and radionuclides to the surface, the potential mishandling of solid waste, drill cuttings, increased seismicity and associated effects on human and ecosystem health.

  4. Occupational fatality - Wikipedia

    en.wikipedia.org/wiki/Occupational_fatality

    The Occupational Safety and Health Administration (OSHA) requires that all employers maintain a record of occupational injuries, illnesses and fatalities. Occupational fatalities must be reported to OSHA within eight hours of the incident. Failure to do so can result in legal action against the employer including citations and fines. [12]

  5. OSHA investigating construction companies tied to fatal Fort ...

    www.aol.com/company-tied-falling-crane-fort...

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  6. List of highly toxic gases - Wikipedia

    en.wikipedia.org/wiki/List_of_highly_toxic_gases

    Many gases have toxic properties, which are often assessed using the LC 50 (median lethal concentration) measure. In the United States, many of these gases have been assigned an NFPA 704 health rating of 4 (may be fatal) or 3 (may cause serious or permanent injury), and/or exposure limits (TLV, TWA/PEL, STEL, or REL) determined by the ACGIH professional association.

  7. A federal workplace safety investigation did not identify any "mechanical deficiencies" in the ground service vehicle used by an American Airlines employee during a fatal crash at Austin's airport ...

  8. Immediately dangerous to life or health - Wikipedia

    en.wikipedia.org/wiki/Immediately_dangerous_to...

    Examples include smoke or other poisonous gases at sufficiently high concentrations. It is calculated using the LD50 or LC50 . [ 1 ] The Occupational Safety and Health Administration (OSHA) regulation (1910.134(b)) defines the term as "an atmosphere that poses an immediate threat to life, would cause irreversible adverse health effects, or ...

  9. Environmental impact of fracking - Wikipedia

    en.wikipedia.org/wiki/Environmental_impact_of_f...

    Using carbon dioxide, liquid propane or other gases instead of water have been proposed to reduce water consumption. [53] After it is used, the propane returns to its gaseous state and can be collected and reused. In addition to water savings, gas fracturing reportedly produces less damage to rock formations that can impede production. [52]

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