This 1998 photograph shows an inspector with the Philippines Department of Labor and Employment, taking part in a hands-on industrial hygiene sampling course. This individual was learning how to take heat-stress measurements in industrial settings, using a WiBGeT® instrument. Other hazards that were under investigation in the foundry were carbon monoxide (CO) levels, as well as measuring levels of silica and metals in airborne dust particulates. The course was co-taught by a National Institute for Occupational Safety and Health (NIOSH) industrial hygienist, and a Harvard University doctoral student, and was sponsored by the International Labour Organization (ILO). This was one in a series of NIOSH images regarding air-sampling techniques, (see PHIL ID#’s: 6796 -6802).