Educational toy made in plastic versions. In the mid-1950s, more explicitly engineering-themed construction toys appeared, including plastic girders, columns, and panels that could be assembled into a model curtain wall skyscraper. Later, this Girder and Panel structural system was extended to a Hydro-Dynamic setup by adding pipes, valves, tanks, nozzles, and pumps to allow construction of model plumbing, HVAC, and chemical engineering systems like a simulated distillation column. Other extensions of the system supported suburban-style housing developments (Build-A-Home), or monorail transportation systems (Skyrail). The building toy Lego was originally developed by Ole Kirk Christiansen in Billund, Denmark, in the 1930s. The name
Lego Power Miners Lego Power Miners Lego Power Miners was a product range – or "theme" – of the construction toy Lego. It was influenced by the previous 1999 Lego Rock Raiders line. Power Miners is based beneath the surface of the Lego World, wherein a team of 'Power Miners' investigate the cause of a series of severe earthquakes and discover both Rock Monsters and Energy Crystals. The theme was released originally in 2009. It was a theme introduced in 2009 and discontinued in 2010. The Power Miners (Doc, Duke, Rex, and Brains) are sent underground by the government to investigate a series