I am not related to, and I am not reseaching the Gassaway Family.
I came across this obituary in a copy o "Mining and Scientific Press" published by the Dewey Publishing Company, San Francisco, California...Vol.102 No.12 page 450, dated March 25, 1911.
I thought that it might be of help or interes to a member of his family....
"A.D. GASSAWAY, who died at Berkeley, California, March 19, after an illness of several months following a severe operation, was one of the most capable of mining engineers who obtained their experience in the California placer mines.He was born and raised in Nevada county, and was familiar with hydraulic mining methods from his youth.Later he turned his attention to dredging, becoming the first superintendent of the Lava Beds Dredging Co., and still later he devoted himself to making examinations and reports on placer properties.To this work he brought a high and deserved reputation for ability and integrity, and his services were much in demand.He returned last year from Siberia where he had been in service of the Lena Goldfields Ltd.He was not entirely well when he reached home, and lived quietly at Berkeley up to the time of his death.Mr. Gassaway was a thorough student, a hard worker, and one who took the duties of his profession seriously.He will be much missed by his friends and associates."