NDA mourns passing of Bill Gumbiner

An estimating expert with over 40 years of experience, Gumbiner taught many estimating courses and seminars throughout his career. His depth of experience was instrumental in the creation of the NDA’s Foundations of Demolition Management Certificate Program. The series was launched with the inaugural estimating course in 2016, which was built from a foundation of Gumbiner’s experience, lectures and material. Read more here.

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