Editing Civilian mining complex (section)

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Each construction phase (5 days by default):

# If a race has at least two colonies with population or infrastructure, that race rolls a random number from 1 to 50,000. If that random number is less than <code>Annual Wealth * (Construction Phase Seconds / Year Seconds)</code>, a check is made for a potential new civilian mining complex. For example, for a race with 20,000 annual wealth checking during a construction cycle that is exactly five days, the number needed to pass would be 274 (20,000 * 432,000 / 31,536,000), which is 0.55%.
# If that check is passed, a list is made of all suitable locations for a civilian mining complex. A suitable location is a system body with at least ''10,000'' tons of Duranium or Gallicite that has an accessibility of at least 0.7. That system body must be in a system with at least one population of ten million and must be less than 80 AU (approx. 12 billion kilometers) from its parent star. If orbiting a non-primary star, that star must be within 80 AU of the primary or have an Lagrange Point within 80 AU that can link to a Lagrange Point within 80 AU of the primary.
# Once all suitable locations are determined, each location is given a score based on the total amount of minerals with accessibility of 0.5 or higher. Duranium scores double. The new mining complex is created at the location with the highest score. Population is not a factor beyond the ten million limit required for consideration of the parent system.

For each existing civilian mining colony, a similar check is made in the construction phase to determine if an additional complex is added. For this check, the roll is 1-100,000.