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400 Bad Request nginx/0.7.61

Symptoms recurred after the following sequence: 1. http://www.diigo.com/bookmark/http%3A%2F%2Fwww.maclife.com%2Farticle%2Ffeature%2Fterminal_tips_every_mac_usershould_know?f=m&tab=people&uname=grahamperrin   — probably loaded OK and I probably did not attempt to reveal the preview pane 2. in the toolbar of Safari, manually edit the URL to http://www.diigo.com/bookmark/http%3A%2F%2Fwww.maclife.com%2Farticle%2Ffeature%2Fterminal_tips_every_mac_usershould_know?f=m&tab=comment&uname=grahamperrin 3. key return 4. AFAIR when I revealed the preview pane, the highlights did not appear 5. in the uppermost bar of Diigo Meta, I command-clicked either the (blue?) title of the bookmarked page, or the (green?) URL of the bookmarked page 6. http://www.maclife.com/article/feature/terminal_tips_every_mac_usershould_know opened in a new tab to the side 7. command-3 for accelerated loading of Diigolet 4.0b14 8. clicked the Comment button to reveal the palette 9. clicked the first highlight 10. Diigolet found and scrolled to that highlight 11. in the earlier tab with http://www.diigo.com/bookmark/http%3A%2F%2Fwww.maclife.com%2Farticle%2Ffeature%2Fterminal_tips_every_mac_usershould_know?f=m&tab=comment&uname=grahamperrin: command-r to reload, error 400. Postscript Edited this comment heavily to include greater detail.

Bug recurred after using http://tinyurl.com/ to produce short URL http://tinyurl.com/apple-discuss-2140119 then opening that link in a new tab, http://www.diigo.com/bookmark/http%3A%2F%2Fdiscussions.apple.com%2Fmessageview.jspa%3FmessageID%3D10228266?tab=comment&uname=grahamperrin fails with error 400

The massive earthquake which struck Chile in early April this year miraculously left the country's copper operations unscathed. Copper prices rose markedly, however, as investors waited to see what the fallout could be for the world's biggest producer. How didChile's copper industry weather the earthquake so successfully and what could the consequences have been had things gone differently?

Caterpillar, Joy Global and OMZ produce some of the biggest draglines used in surface mining operations. Mining-technology.com profiles the ten biggest draglines in use based on bucket capacity. Caterpillar's Cat 8750 series draglines have a bucket capacity ranging from 76m3 to 116m3 (100 to 152 cubic yards).

Springsure Creek Coal, a wholly owned subsidiary of Bandanna Energy, is developing the Springsure Creek underground thermal coal mine in Central Queensland, Australia. The coal mine is expected to produce approximately 11 million tonnes of coal per year and is expected to have a mine life of 40 years.