Various
The ultimate manhole covers site
ELOT - Ίδρυση του Ελληνικού Οργανισμού Τυποποίησης - The Hellenic Standardization Organization.
The association was established in 1976 and is responsible for the regulation in Greece

The home page of the Organization web site http://www.elot.gr/30_ELL_HTML.aspx

An example of a cover that carries the standard on the "ultimate manhole covers" site. From this lid the picture that appears in the general section was taken.
There are 19 manhole covers in the site that has this standard mark
Click for all the covers with this standard

Click for the rest of the standards in the site

The ultimate manhole covers site

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