TEXAS ROCK & MINERAL SET View cart “SOLAR POWERED DERRICK” has been added to your cart. View cart “SOLAR POWERED DERRICK” has been added to your cart. $36.00 Add this set to your little geologist’s collection. Big Geologists love it as well! Out of stock Categories: Children, Mineral & Fossil Related products TEXAS BOOMTOWNS: A HISTORY OF BLOOD AND OIL $21.99 Add to cart STORYTELLER WITH A BRUSH – DVD $20.95 Add to cart Metal Industry Signs $12.99 Select options SOLAR POWERED DERRICK $385.00 Add to cart