The Continuum of Care (CoC) Program is a federal program designed to promote a communitywide commitment to the goal of ending homelessness by providing funding for permanent housing, supportive services, rapid re-housing, and permanent supportive housing for homeless individuals, youth and families.
Strongholds are underground structures found in Minecraft after Beta 1.8, only three strongholds spawn per map. Most Strongholds have several Mob Spawners, an abundance of three types of Stone Brick, Stone Slabs, Cobblestone and Chests with randomized loot.
As you can see from the table above, everything is available in layers 1&endash;16. You will want to get close to bedrock and build your mine there. However, there may be other underground structures in the way, such as abandoned mineshafts, cave systems or even strongholds.