Building blocks
Black Bulk Goods Cap Small
A sandstone block with 100 hit points.
Harvest drops
Coal× 2-4
Taken apart with a harvesting tool (axe, pickaxe, shovel), before perks and tool bonuses.
When it collapses
Falling, it leaves 
Destroyed Stone (50% of the time) where it lands.
Where to find (8 POIs)
Fort Choppa (tier 4), HSP Logistics (tier 4), Jeffelon Zuckergates Estate (tier 4), NFD Downtown HQ (tier 4), HSP Distribution Center (tier 3), Shady Woods Amphitheatre (tier 3), The TJ Morales Residence (tier 1), Cleetus' Car Recycling.
Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.