Figure 9 illustrates the type of decay nuclides in different regions of the chart will typically undergo. Nuclides that are below and to the right of the line of stability will usually undergo decay. Nuclides that are above and to the left of the line of stability will usually undergo either decay or electron capture.
The county is also served by two major railways: the Union Pacific and the Burlington Northern and Santa Fe. Austin County covers 656 square miles on the boundary between the Post Oak Savannah and the Coastal Prairie regions of Texas. The terrain varies from rolling hills in the northern, western, and central sections to a nearly level coastal prairie in the south.
The silver deposits of the Reese River mining district were discovered in 1862. The town of Austin was established, and in 1863 became the county seat of the newly formed Lander County. By 1867, there were 11 ore-processing mills in the district.