Natural resources, construction and Maintenance occupations mapped!

This map shows the distribution of Natural Resources, Construction, and Maintenance jobs in Travis County, TX. The color ranges from Beige (lowest) to Blue (highest).
The Central Business District (CBD) has the lowest number of these type of professions.
They are concentrated in the Residential zone  of   Burgess' Concentric Model . It makes sense that construction jobs will be in areas where construction works are happening without having to pay the high rent of the CBD. Natural Resources jobs tend to be around where they play their role. Example; Texas Parks & Wildlife Department is conveniently located around McKinney Falls State Park.
In essence, these jobs are located where their resources or the market is located.