Opal is a gemstone whose chemical composition is an amorphous, gelatinous, hydrous silica containing varying degrees of water and traces of metal oxides. The opal called fire opal is often carved, engraved or faceted.

Optical fibres are made from extremely thin, flexible hairlike strands of glass. They allow light to be sent over great distances and round corners.

Other Food Crops Grown Under Cover - this industry comprises establishments primarily engaged in growing food crops (except mushrooms) under glass or protective cover.

Office refers to a place of business where professional or clerical duties are performed; it is a place where a particular kind of business or service for others is transacted; a house or apartment in which public officers and others transact business; as, the register's office; a lawyer's office.

An Open-Top Container is a container fitted with a solid removeable roof or with a tarpaulin roof that can be loaded or unloaded from the top.

Ref: 84764/2006-08-24


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Optical/light microscopes use the visible or near-visible portion of the electromagnetic spectrum to magnify images of objects. There are two basic types of devices. Stereomicroscopes use two light paths for three-dimensional (3D) viewing.

Oxygenated gasoline pertains to gasoline with an oxygen content of 1.8 % or higher, by weight, that has been formulated for use in motor vehicles .
Ref: 120996/2006-10-08

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Lexicon from 'Oak barrel' until 'Oxygenated gasoline'
Lexicon from 'Oak barrel' until 'Oxygenated gasoline'
Orange Groves - this industry comprises establishments primarily engaged in growing oranges.

Oranges are round citrus fruits that are grown on trees. Farms that grow oranges are commonly called ægroves?.

The primary activities of firms in this industry are:
Orange growing

NAICS Code: 11131

-see also:
"Orange Groves" is in the NAICS Code "11131"
  (Orange Groves11131)

- 87282/2006-09-17

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Range (A Range is the difference between the maximum and ...)

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