Chapter 13: Mining and Oil Extraction
Most hard rock mining in Manitoba takes place in the north, giving rise to mining towns, some of which (with their associated mines) are shown in Chapter 11: Northern Settlements. Some bedrock is/was exploited in quarries in the south (at Stonewall and Garson). However, “aggregate resources”—mainly gravel and sand—are distributed throughout the province. “The extensive natural deposits of sand and gravel throughout Manitoba are generally related to processes associated with the deglaciation of Manitoba at the end of the last Ice Age…. During deglaciation, sand and gravel accumulated in moraines, eskers, delta complexes, and beach deposits, and along meltwater channels.”[i] For example, the Birds Hill esker-delta complex (figure 3.64) northeast of Winnipeg is the main source of sand and gravel for the city. Oil extraction, confined to the southwest, is detected by surface indicators—pumpheads (grass hoppers), storage tanks, and pipelines. Examples of some of the locations are shown in the following figures.
13.14: Enbridge Oil Storage Facility Near Gretna: Large-scale Air Photo
This air photo shows detail of the storage facility. In the west are four large tanks 1 with a pond 2 to the south. In the east are at least 18 tanks 3; those painted white are easily picked out, but a black-painted tank 4 is not so obvious. Shadows fall almost due north 5 indicating that the photo was taken near noon.
Figure 13.14: Enbridge Oil Storage Facility Near Gretna: Large-scale Air Photo
Flight height: ; lens focal length:
Scale: 1:17,000 (approx.)
Location: Township 1; Ranges 1 and 2 WI
Map sheets: 1:250,000 62H
1:50,000 62H/4 Altona