Affichage de 1062 résultats

Items consist of one negative, one original print and one contact print. Title is taken from the subject matter of the photograph;The pumphouse and a number of houses can be seen in the distance. 120mm negative located in Box 02, Bay 222, Shelf 05

Items consist of one negative, one original print and one copy print of the river. Title is taken from the subject matter of the photograph;A small ice jam caused the water to back up in this area Some powerlines were surrounded by water as a result;120mm negative located in Box 02, Bay 222, Shelf 05

Items consist of one negative and one copy print of the river. Title is taken from the subject matter of the photograph;35mm negative located in Box 02, Bay 222, Shelf 05

Items consist of one negative, one original print and one copy print of the river. Title is taken from the subject matter of the photograph;35mm negative located in Box 02, Bay 222, Shelf 05

Items consist of one negative and one copy print of the river. Title is taken from the subject matter of the photograph;35mm negative located in Box 02, Bay 222, Shelf 05

Items consist of one negative and one copy print of the Elbow River. Title is taken from the subject matter of the photograph;The 1915 Elbow River flood;The wooden guard wall at the gravity intake was constructed to prevent fish and debris from entering the intake;The gravity intake was located on the Elbow River at 32nd Ave and Crowchild Trail SW;The gravity intake siphoned water from the Elbow River at a high elevation and delivered the water to Waterworks;35mm negative located in Box 03, Bay 222, Shelf 05

The photoprint illustrates the water treatment methods of the Bonnybrook Sewage Treatment Plant; A note was attached to the photoprint with tape, this was removed and stored with the photoprint; The note reads: 'Differences in clarity and sediment are readily visible in samples taken from the Bonnybrook plant. Left is raw sewage, as it enters the plant. Centre is effluent from the primary treatment process, considerably clearer but still cloudy. Effluent from new secondary process, right, is almost perfectly clear. -30-; Bob Anderson; Francis, Williams, Johnson &Payne Ltd. 700 - 6th Avenue S.W. #644, Calgary 1, Alberta. March 26, 1971 Phone 266-7061'

Item consists of a photoprint of the Bonnybrook Sewage Treatment Plant. The plant is located at 4302 15th Street SE; A note was attached to the photoprint with tape, this was removed and stored with the photoprint; The note reads: 'North America's largest mechanical aeration facility, using 40 units such as the one above, is an integral part of the secondary process at Bonnybrook. The aeration section is the size of five football fields. Underwood and McLellan engineer John Sabol stands beside one of the 60-horsepower electric drive units. -30-; Bob Anderson; Francis, Williams, Johnson &Payne Ltd. 700 - 6th Avenue S.W. #644, Calgary 1, Alberta. March 26, 1971 Phone 266-7061'