"NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response" is a standard maintained by the U. S.-based National Fire Protection Association. First "tentatively adopted as a guide" in 1960, revised several times since it defines the colloquial "Safety Square" or "Fire Diamond" used by emergency personnel to and identify the risks posed by hazardous materials; this helps determine what, if any, special equipment should be used, procedures followed, or precautions taken during the initial stages of an emergency response. The four divisions are color-coded with red on top indicating flammability, blue on the left indicating level of health hazard, yellow on the right for chemical reactivity, white containing codes for special hazards; each of health and reactivity is rated on a scale from 0 to 4. The latest version of NFPA 704 sections 5, 6, 7 and 8 for the specifications of each classification are listed below; the numeric values in the first column are designated in the standard by "Degree of Hazard" using Arabic numerals, not to be confused with other classification systems, such as that in the NFPA 30 Flammable and Combustible Liquids Code, where flammable and combustible liquid categories are designated by "Class", using Roman numerals.
"Frequently Asked Questions on NFPA 704". "Pamphlet produced by the City of Milwaukee summarizing NFPA 704 code requirements". City of Milwaukee. "Hazard Communication". Occupational Safety and Health Administration. "Safety in the Chemistry Laboratory: NFPA 704 Hazard Identification System". University of Oregon. Archived from the original on 2015-03-10
Tommy William Polley is a former American football player who spent six seasons in the NFL. He played for the St. Louis Rams from 2001 to 2004 before signing with the Ravens as a free agent in 2005, he played only one season with the Ravens before signing with the Saints on June 2, 2006. Polley played football for Dunbar High School, he was a Top 50 Basketball prospect according to Hoop Scoop. Polley was hailed as one of the top prep athletes in the nation during his senior year at Dunbar High School in Baltimore, regarded as one of the top producers of basketball talent in the country, he was USA Today’s Player-of-the-Year in Maryland after recording 208 tackles, 16 sacks and eight interceptions as a senior. He caught 34 passes for 567 yards and three TDs, he led his team to back-to-back state championships as a junior and senior and was named Baltimore area Defensive Player-of-the-Year after both his junior and senior campaigns. He was regarded as one of the country’s top 60 basketball prospects and led the Poets to four straight state titles—averaged 20.4 points, 10.7 rebounds and 8.1 assists per game as a senior.
Polley enrolled at Florida State University as a scholarship player. He ended his collegiate career with 289 tackles and was a semi-finalist for the Butkus Award, third-team Football News All-American, First-team All-ACC selection, a finalist for the ACC’s Brian Piccolo Award. In his final season at FSU, Polley had 100 tackles with 53 solo tackles, 7 tackles for a loss, 2 sacks, broke up 7 passes, recovered a team-high 3 fumbles and forced one; the defensive leader and captain took the Seminoles to another National Championship though his team lost 13-2 to the Oklahoma Sooners. In his junior year in 1999 Polley had an outstanding season when he led Florida State with 109 tackles and had six stops for loss, he earned First-team All-ACC accolades. In his Sophomore Year he started 12 of 13 games at both outside linebacking posts and had 59 total tackles and had two tackles for loss. 1997 was his redshman Year (and he totaled 21 tackles with 13 solo stops in first year of action and played in all 12 games and had at least one tackle in eight games.
In 1996, he Redshirted along with most of his class. Polley was drafted by the St. Louis Rams on the second round of the 2001 NFL Draft, he finished his rookie season with 67 tackles. Polley went on to have a 6-year NFL career, amassing 304 tackles with 224 solo stops, retired in 2007 after a shoulder injury sidelined him for most of the season. After 4 seasons with the Rams, he finished his career by spending one-year with the Baltimore Ravens and his final year with the New Orleans Saints. Polley now coaches for at Althoff Catholic High School in Belleville, Illinois as a defensive line coach
Paul Richard Pedersen is a Canadian composer, arts administrator, music educator. An associate of the Canadian Music Centre and a member of the Canadian League of Composers, he is known for his works of electronic music. In 2014 he was made an Honorary Member of the Canadian Electroacoustic Community. Early on in his career, he wrote non-electronic compositions. Born in Camrose, Pedersen entered the University of Saskatchewan in 1953 where he earned a Bachelor of Arts in music in 1957. At the school he was mentored in music composition by Murray Adaskin, he matriculated to the University of Toronto. He returned to the UT to pursue doctoral studies in musicology which focused on research in acoustic and musical psychology. Part of his research was published in the Winter 1965 edition of the Journal of Music Theory in an article entitled The mel scale, he earned a PhD from the UT in 1970 after completing his doctoral dissertation, The perception of musical pitch structure. In 1961 Pedersen joined the music staff at Parkdale Collegiate Institute in Toronto.
He left there in 1962 when he was appointed music director of Augustana University College, a post he held through 1964. In 1966 he was appointed to the Faculty of Music at McGill University where he remained for the next 24 years, he served as the chairman of McGill's theory department from 1970–1974 and was head of the McGill University Electronic Music Studios from 1971-1974. He served as Associate-Dean of the Faculty of Music from 1974–1976 and as Dean from 1976-1986, he was director and executive producer of McGill University Records from 1976-1990. In 1990 Pedersen left McGill to become the Dean of the Faculty of Music at the University of Toronto. In 2016, Concordia University in Montreal created'The Paul Award in Electroacoustics' to celebrate Paul Pedersen's contribution to the development of electroacoustics in Canada; the Paul Pedersen Collection at Marvin Duchow Music Library, McGill University