Can you briefly explain how Exploration business including answering the following:
1. How long do they take to be created;
10 days.
More information here:
http://www.simbusiness.com/ee/wiki/Units_reference_table/
2. What do you do once they’ve been created; and
You wait.
Time needed to discover a new resource is not fixed and there is nothing you can do to accelerate the process.
Note that it can be longer if you search for a natural resource in a non usual country.
3. After they locate a resource, can they be used again, or do you need to build a new one for subsequent exploration?
When a resource is discovered you have up to 180 days to buy it. During these 180 days you are the only player able to buy the resource, you have an exclusive buy option on it. After the 180 days the resource is placed on the open resources market.
When the resource is bought, the unit is automatically destroyed.