a part of a survival kit or a mini survival kit in addition to other tools. workplace first aid kits in the united states, the occupational safety and health administration (osha) requires all job sites and workplaces to make available first aid equipment for use by injured employees. while providing regulations for some industries such as logging, in general the regulation lacks specifics on the contents of the first aid kit. this is understandable, as the regulation covers every means of employment, and different jobs have different types of injuries and different first-aid requirements. however, in a non-mandatory section, the osha regulations do refer to ansi/isea specification z308.1 as the basis for the suggested minimum contents of a first aid kit. another source for modern first aid kit information is united states forest service specification 6170-6, which specifies the contents of several different-sized kits, intended to serve groups of differing size. in general, the type of first aid facilities required in a workplace are determined by many factors, such as: the laws and regulation of the state or territory in which it is located; the type of industry concerned; for example, industries such as mining may have specific industry regulations detailing specialised instructions; the type of hazards present in the workplace; the number of employees in the workplace; the number of different locations that the workplace is spread over; the proximity to local services (doctors, hospital, ambulance). historic first aid kits travel pharmacy (early 20th century). as the understanding of first aid and lifesaving measures has advanced, and the nature of public health risks has changed, the contents of first aid kits have changed to reflect prevailing understandings and conditions. for example, earlier us federal specifications for first aid kits included incision/suction-type snakebite kits and mercurochrome antiseptic. there are many historic components no longer used today, of course; some notable examples follow. as explained in the article on snakebite, the historic snakebite kit is no longer recommended. mercurochrome was removed in 1998 by the us fda from the generally recognized as safe category due to concerns over its mercury content. another common item in early 20th century first aid kits, picric acid gauze for treating burns, is today considered a hazardous material due to its forming unstable and potentially explosive picrates when in contact with metal. examples of modern additions include the cpr face shields and specific body-fluid barriers included in modern kits to assist in cpr and to help prevent the spread of bloodborne pathogens such as hiv.