Preliminary control technology assessment of Ozark Lead Company, Sweetwater, Missouri.

Details

• Personal Author:
  Godbey FW
• Description:
  A visit was made to the Ozark Lead Company to investigate control measures used in full lead ore beneficiation. Possible hazardous substances to which these workers could be exposed include lead (7439921), silica (7631869), nuisance dusts, and flotation reagents. The facility processed about 6,000 tons of crude ore per day. A cascade type crushing facility reduced the ore to less than 5/8 inch. A continuous belt conveyor carried the ore to the concentrator fine ore storage silos fRom, William N.here ore was proportionally mixed with water and fed into the grinding circuit. The flotation feed pulp was conditioned by automatically controlled reagent additions and processed through the lead recovery flotation circuit. To free the more finely disseminated zinc-sulfide, tailings were reground. The concentrate from each circuit flows out to the thickener tanks where the pulp was thickened to 70 percent solids and pumped to the respective drum type belt filters. The filtered dewatered concentrate was then stored in loading bins until it was automatically loaded out in measured lots for hauling to the smelter. No specific engineering controls were employed in this operation other than a central control room facility equipped with a closed circuit television to monitor the continuous belt conveyor system. The author recommends that this facility not be included in the in depth study of hazards encountered in lead ore beneficiation.
• Subjects:
  Accidents, Occupational Eye Manufacturing And Industrial Facilities Occupational Health Personal Protective Equipment Protective Clothing Safety Safety Management Sense Organs
• Keywords:
  Control-methods Control-technology Field-Study NIOSH-Author NIOSH-Survey Refineries Region-7
• DOI:
  https://doi.org/10.26616/NIOSHECTB11114A
• 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:
  1-5
• NIOSHTIC Number:
  nn:00182760
• 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 111-14A, 1981 Aug; :1-5
• CAS Registry Number:
  Lead (CAS RN 7439-92-1) ; Silica (CAS RN 7631-86-9)
• Federal Fiscal Year:
  1981
• NORA Priority Area:
  Control-technology
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:140971843534f75263578dff77b97613193d39ac2faf90c4cdd9f1cd3e594ffa34ad2aad0d2d5fae079913bdb6b3b6440f6cecf3cb5f140be5e3b937dffa0348
• Download URL:
  https://stacks.cdc.gov/view/cdc/180094/cdc_180094_DS1.pdf
• File Type:
  [PDF - 1.33 MB ]