In-depth survey report: Cominco American, Inc., Bixby, Missouri.

Details

• Personal Author:
  Cooper TC ; Godbey FW
• Description:
  Health hazard controls used in lead (7439921) ore beneficiation operations were surveyed at Cominco American, Incorporated (SIC- 1031), Bixby, Missouri in February, 1982. The company used a lead flotation process, and employed 26 workers in the mill. An average of 4,600 tons of ore containing about 7 percent lead were processed each day. Work processes and controls were evaluated, and personal and area air samples were collected for lead, carbon-disulfide (75150), and cyanide (57125). Average personal exposures were 0.158 milligram per cubic meter (mg/m3) for lead, 1.31mg/m3 for carbon- disulfide, and 0.007mg/m3 for cyanide. Average area concentrations of lead ranged from 0.014 to 1.950mg/m3, and were 0.006mg/m3 for cyanide and 1.14mg/m3 for carbon-disulfide. Dust concentrations were effectively controlled by the use of a ventilated starch mixing tank equipped with a polypropylene lined dump chute, but the cleaner and recleaner flotation cell covers were not effective in reducing mist generation. The use of water spikes did reduce cyanide and carbon-disulfide exposures, and lead exposures for the mill operation were controlled with the use of an isolated, enclosed, air conditioned flotation cell control room.
• Subjects:
  Accidents, Occupational Environmental Monitoring Lead Occupational Exposure Occupational Health Preceptorship Safety Ventilation Workplace
• Keywords:
  Air-quality Breathing-zone Control-technology Dust-control Exposure-levels Field-Study Industrial-processes Lead-production Milling-industry NIOSH-Author NIOSH-Survey Region-7 Ventilation-systems Work-practices

  More +
• DOI:
  https://doi.org/10.26616/NIOSHECTB11112b
• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Genre:
  Field Studies ; Control Technology
• Place as Subject:
  Missouri ; Ohio ; OSHA Region 5 ; OSHA Region 7
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DPSE - Division of Physical Sciences and Engineering
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-24
• NIOSHTIC Number:
  nn:00158061
• Citation:
  Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, ECTB 111-12b, 1982 Jul; :1-24
• CAS Registry Number:
  Lead (CAS RN 7439-92-1) ; Carbon disulfide (CAS RN 75-15-0) ; Cyanide (CAS RN 57-12-5)
• Federal Fiscal Year:
  1982
• NORA Priority Area:
  Control-technology
• Peer Reviewed:
  False
• NAICS and SIC Codes:
  1031 - Lead and zinc ores - (SIC)
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:98267d59ec5f8b6e3f46d0d39996e251dba9f28b6f3efa3e4c830097bc9f25d722a417b405e0281053a8a21406a94e809456b2c32e23576c7575f526f11c371a
• Download URL:
  https://stacks.cdc.gov/view/cdc/179802/cdc_179802_DS1.pdf
• File Type:
  [PDF - 462.01 KB ]