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Blowdown is an explosive four part building demolition series profiling some of the most challenging projects of Controlled Demolition Inc of Phoenix, Maryland. Each of the structures, some notable, others notorious is unique and present the team with challenges ranging from the structural, to the
explosive and to the bureaucratic. In episode one, the team from CDI travels to Sellafield, England to take down four outdated cooling towers on the site of the world’s first commercial nuclear
reactor. Sellafield has a long history of nuclear incidents and mishaps dating back to the infamous Windscale Fire in 1957. Sellafield now stores and treats nuclear waste and is home to 90% of Britain’s industrial radioactivity. The tension is increased by the fact that explosives have never been used on an active nuclear site in the United Kingdom before and it has taken four years to overcome the bureaucratic hurdles. The subjects of the film are four nuclear cooling towers. Each one is 88 m high and has an estimated mass of 5,200 tons. Of particular concern is the fact that the towers are only 40 meters away from a nuclear fuel handling plant. There has been a steady deterioration of the towers and there is the concern of an inadvertent collapse. Explosive demolition has been determined to be the safest and most cost effective means of removing the towers.
Each of the towers will be loaded with three sets of explosives. The first set will be in the legs of the towers, encircling 60% of the circumference. The second set will be set in a predrilled band around
the same 60% approximately 20 m up. Charges will also be loaded into 3 vertical slots about 10 meters high which should cause the concrete shells of the towers to deform, rotate and collapse within the drop zone.

With just 10 days to load all four towers, the team struggles safely load and rig more than 4,500 charges and time the explosions to minimize the risks to the surrounding site. The team must evaluate each risk, real or imagined and account for it in the plan. Major concerns are projectiles, ground vibration and air over pressure that could compromise operations at the nuclear facility.

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Free Documentary is dedicated to bring high-class documentaries to you on youtube for free. With the latest camera equipment used by well-known filmmakers working for famous production studios. You will see fascinating shots from the deep seas and up in the air, capturing great stories and pictures from everything our beautiful and interesting planet has to offer.

Enjoy stories about nature, wildlife, culture, people, history and more to come.

Sardinia has always been the epitome of pure wilderness, an emerald of volcanic origin in the Mediterranean. 1900 meters of coastline and an infinite maze of offshore islands. But Sardinia also has other facets: green valleys, rugged mountains, murmuring brooks, mysterious ruins and a unique fauna.

Just off of Sardinia's coast is an untouched underwater paradise - uniquely beautiful, but also dangerous. Pilot whales, dolphins and mobula rays populate the waters at Capo Testa in the north of the island. In the west, the lagoons of Cabras represent a wild landscape of lakes in which thousands of flamingos live and hunt the red brine shrimps. In addition to the flamingos, grey and purple herons and little egrets breed here. Thousands of bats have found refuge in the craggy mountain world of the Supramonte and Gennargentu, with their countless grottoes and caves.

In the sea we can observe the mass mating of sea slugs, and thanks to our camera robots and submersible boats we were able to observe beard worms with luminous red gills, as well as bright yellow tree corals in the area surrounding the hypothermal lava holes.

Whoever wants to experience South America as a nature paradise in a small area, should explore Costa Rica. Almost half of the country is covered by rain forest. Numerous animal species are to be found here like the White faced Capuchin, colourful parrots like the Macaw, Veruga Parakeets and Tapirs.

Also lizards from primeval times have their habitat in this region of the planet. The small central American nation not only fascinates with a rich fauna and flora but also with a wonder world under water. Insights into the fascinating world of the jungle show examples like the epiphytes that make their way to the sky at the expense of her host plant.

A view into the culture of the Indian inhabitants of the rain forest of course does not come too briefly either. A diving excursion through the ocean waters of Cocos Island is the highlight of the journey. The spectator will get flesh crawl while watching hundreds of dangerous hammerhead sharks gliding past the camera.