No, I never told you. I just held it in. And now, I miss everything about you. Can't believe that I still want you. And after all the things we've been through. I miss everything about you. Without you. Songwriters: REEVES, JASON / DIAGUARDI, KARA / CAILLAT, COLBIE.
In reality, while asbestos was commonly used in many asphalt roofing materials, asbestos was rarely used in the shingles themselves. It is acknowledged by the asphalt shingle manufacturers that between 1963 and the mid 1970s, some manufacturers did use asbestos in the fiber mat of shingles.
Structural engineering has existed since humans first started to construct their own structures. It became a more defined and formalized profession with the emergence of the architecture as distinct profession from the engineering during the industrial revolution in the late 19th century.