Documented from sunrise until 11:00 AM May 17th 2013 in Hamden Connecticut. The white out definitely had a cooling effect. I have personally observed and photographed on-going atmospheric modification operations for years now since 2006, From some reports they go back to the 1990's. But it has been very heavy since the past decade. There are many different types and methods used to manipulate the atmosphere climate and weather some involve directed energy as well. There has been rarely a day or week where operations have been absent from the skies.

Uses and properties of Aluminum

Image explanation

Aircraft fuselages and aluminum foil are just two of the many and varied uses of this element

Appearance

Aluminum is a silvery-white, lightweight metal. It is soft and malleable.

Uses

Aluminum is used in a huge variety of products including cans, foils, kitchen utensils, window frames, beer kegs and aeroplane parts. This is because of its particular properties. It has low density, is non-toxic, has a high thermal conductivity, has excellent corrosion resistance and can be easily cast, machined and formed. It is also non-magnetic and non-sparking. It is the second most malleable metal and the sixth most ductile.

It is often used as an alloy because aluminum itself is not particularly strong. Alloys with copper, manganese, magnesium and silicon are lightweight but strong. They are very important in the construction of aeroplanes and other forms of transport.

Aluminum is a good electrical conductor and is often used in electrical transmission lines. It is cheaper than copper and weight for weight is almost twice as good a conductor.

When evaporated in a vacuum, aluminum forms a highly reflective coating for both light and heat. It does not deteriorate, like a silver coating would. These aluminum coatings have many uses, including telescope mirrors, decorative paper, packages and toys.

Biological role

Aluminum has no known biological role. In its soluble +3 form it is toxic to plants. Acidic soils make up almost half of arable land on Earth, and the acidity speeds up the release of Al3+ from its minerals. Crops can then absorb the Al3+ leading to lower yields.

Our bodies absorb only a small amount of the aluminum we take in with our food. Foods with above average amounts of aluminum are tea, processed cheese, lentils and sponge cakes (where it comes from the raising agent). Cooking in aluminum pans does not greatly increase the amount in our diet, except when cooking acidic foods such as rhubarb. Some indigestion tablets are pure aluminum hydroxide.

Aluminum can accumulate in the body, and a link with Alzheimer’s disease (senile dementia) has been suggested but not proven.

Natural abundance

Aluminum is the most abundant metal in the Earth’s crust (8.1%) but is rarely found uncombined in nature. It is usually found in minerals such as bauxite and cryolite. These minerals are aluminum silicates.

Most commercially produced aluminum is extracted by the Hall–Héroult process. In this process aluminum oxide is dissolved in molten cryolite and then electrolytically reduced to pure aluminum. Making aluminum is very energy intensive. 5% of the electricity generated in the USA is used in aluminum production. However, once it has been made it does not readily corrode and can be easily recycled.  
http://www.rsc.org/periodic-table/element/13/aluminium

Holdren - Aluminum Oxide Chemtrail Operations