MARS LEGEND

Hazardous Waste Treatment and Disposal

This includes establishments primarily engaged in (1) operating treatment and/or disposal facilities for hazardous waste or (2) the combined activity of collecting and/or hauling of hazardous waste materials within a local area and operating treatment or disposal facilities for hazardous waste.

Other Nonhazardous Waste Treatment and Disposal

This includes establishments primarily engaged in (1) operating nonhazardous waste treatment and disposal facilities (except landfills, combustors, incinerators, and sewer systems or sewage treatment facilities) or (2) the combined activity of collecting and/or hauling of nonhazardous waste materials within a local area and operating waste treatment or disposal facilities (except landfills, combustors, incinerators, and sewer systems or sewage treatment facilities). Compost dumps are included in this industry.

Medical Laboratories

This includes establishments known as medical laboratories primarily engaged in providing analytic or diagnostic services, including body fluid analysis, generally to the medical profession or to the patient on referral from a health practitioner.

Illustrative Examples:

Blood analysis laboratories
Medical pathology laboratories
Medical bacteriological laboratories
Medical testing laboratories
Medical forensic laboratories

Blood and Organ Banks

This includes establishments primarily engaged in collecting, storing, and distributing blood and blood products and storing and distributing body organs.