 The study was published simultaneously in the United States and became the most prominent study proving the danger of asbestos. The warning signs couldn't slow the industry. Production tripled between 1900 and 1910, and in the late 1930s, asbestos was already massively popular. In 1939, the Johns Manville Company built an asbestos man, protecting mankind's buildings for display at that year's World's Fair. The growing tensions of World War II caused countries to stockpile asbestos for fear of disruptions in production.