The author works for Prospex Energy - but this website does not represent company opinion nor does it contain market-relevant information. PXEN is a public company and the last thing I want to do is post information that might affect the shareholders, many of whom I've personally met in company events.

I have no interest in copywriting any of the content. Feel free to copy and paste whatever you like, whether in a professional or personal capacity. Include attribution if you want to be nice, either to me or to other people whose work I reference.

The design of this website is own work, down to the html and the style, but draws heavily on W3S tutorials. The contents table borrows CSS from Jake (of who encouraged others to use his work, this is my opportunity to say thanks

Ellipsoid parameters from Stephen Dutch of Uni of Winsconsin who also put his workbook in the public domain for all to use. Many thanks

Some maps done on GMT, an open-source mapping package that has been around since the early 90s thanks to Paul Wessel, Walter Smith and their team

QGIS also used extensively for this page. QGIS is also free

For questions, corrections and comments reach me at