24.07.2009 13:53

New drilling holes at Olkiluoto

During the summer two new drilling holes have been made at Olkiluoto.

The first hole, OL-KR51, reaches approximately 600 metres underground with the second, OL-KR52, reaching approximately 420 metres below the ground. In addition, a third drilling hole will be made later on in the summer with an anticipated length of 300 metres below the ground.


Other work that has been on the summer's agenda includes making a new investigation trench, among other things, with the geological mapping of the investigation trench on-going. The investigation trench's main objectives are to give further information on the rock types and fracture zones of the bedrock, as well as shedding light on its structural trends. 

Return to headlines

Share article:
This website stores cookies on your computer. These cookies are used to improve our website and provide more personalised services to you.


To make this site work properly, we sometimes place small data files called cookies on your device. Most big websites do this too.

1. What are cookies?

A cookie is a small text file that a website saves on your computer or mobile device when you visit the site. It enables the website to remember your actions and preferences (such as login, language, font size and other display preferences) over a period of time, so you don’t have to keep re-entering them whenever you come back to the site or browse from one page to another.

2. How do we use cookies?

A number of our pages use cookies to remember your actions and preferences (such as login, language, font size and other display preferences.)

Also, some videos embedded in our pages use a cookie to anonymously gather statistics on how you got there and what videos you visited.

Enabling these cookies is not strictly necessary for the website to work but it will provide you with a better browsing experience. You can delete or block these cookies, but if you do that some features of this site may not work as intended.

The cookie-related information is not used to identify you personally and the pattern data is fully under our control. These cookies are not used for any purpose other than those described here.

3. How to control cookies

You can control and/or delete cookies as you wish – for details, see You can delete all cookies that are already on your computer and you can set most browsers to prevent them from being placed. If you do this, however, you may have to manually adjust some preferences every time you visit a site and some services and functionalities may not work.