IBM cards by the Social Security Administration's Division of Accounting Operations. Thus, it was possible to abstract selected data about occupations that would be useful for vocational evaluation. This Supplement, entitled Selected Characteristics of Occupations, was published in 1966 and proved to be a valuable tool in supplementing information provided by a disability claimant regarding his past work and in identifying jobs for which he could qualify." As a result of this work, Social Security Administration's Ruling SSR 00-4p and prior Regulations explain: "In making disability determinations, we rely primarily on the DOT (including its companion publication, the SCO) for information about the requirements of work in the national economy. We use these publications at steps 4 and 5 of the sequential evaluation process." What Does the SCO Contain? The SCO provides additional data not found in the two volumes of the DOT. In addition to the DOT codes and Guide for Occupational Information Group codes, the SCO provides the following: SVP Specific Vocational Preparation Physical Demands SVP Specific Vocational Preparation St Strength Cl Climbing Ba Balancing St Stooping Kn Kneeling Co Crouching Cw Crawling Re Reaching Ha Handling Fi Fingering Fe Feeling Ta Talking He Hearing Ts Taste/Smell NA Near Acuity FA Far Acuity DP Depth Perception Ac Accommodation CV Color Vision FV Field of Vision Environmental Demands We Exposure to Weather Co Extreme Cold Ho Extreme Heat Hu Wet and/or Humid No Noise Intensity Level Vi Vibration AC Atmospheric Conditions MP Proximity to Moving Mechanical Parts ES Exposure to Electric Shock HE Working in High Exposed Places Ra Exposure to Radiation Ex Working with Explosives TC Exposure to Toxic or Caustic Chemicals Ot Other Environmental Conditions These data are arranged in the SCO in long columns of rows of letters and numbers, which may seem fairly incomprehensible to the uninitiated, such as 6 S NNNNNNNNN NNNNCNNCNN NNNN3NNNNNNNNN 2 S NNNNNNNNN NNNNCNNOOO NFFN3NNNNNNNNN 3 L NNNNNNNNN NNNNCNNCNN NNNN3NNNNNNONN See also Vocational education Bureau of Labor Statistics Surveillance system monitor example of a typical occupation in the SCO External links U.S. Department of Labor O*net Social Security Disability Advocacy, Debate, and Professional News Office of Disability Adjudication and Review (ODAR) Dictionary of Occupational Titles Selected Characteristics of the DOT (SCO) References Social security in the United States United States Department of Labor publications