Talk:Race to save Chilean miners trapped underground from spiralling into depression continues

Review of revision 1086307 [Failed]

Revision 1086307 of this article has been reviewed by InfantGorilla (talk · contribs) and found not ready at 06:56, 31 August 2010 (UTC). Copyright: Not reviewed. Please address other issues. Newsworthiness: Passed Verifiability: Not ready: All the sources are from The Guardian. Needs at least two independent sources NPOV: Not reviewed. Please address other issues. Style: Not ready: Please proof read it again for clarity and brevity;I noticed that the opening sentence gives the impression that the mine collapsed after 60 days, and I didn't proof read in detail after that Comments by reviewer: also, if it gets published today, please substitute 'Sunday' with 'yesterday' Questions about the above? Ask. If possible, please address the above issues then resubmit the article for another review (by replacing {{tasks}} in the article with {{review}}). This talk page will be updated with subsequent reviews.

Revision 1086307 of this article has been reviewed by InfantGorilla (talk · contribs) and found not ready at 06:56, 31 August 2010 (UTC). Copyright: Not reviewed. Please address other issues. Newsworthiness: Passed Verifiability: Not ready: All the sources are from The Guardian. Needs at least two independent sources NPOV: Not reviewed. Please address other issues. Style: Not ready: Please proof read it again for clarity and brevity;I noticed that the opening sentence gives the impression that the mine collapsed after 60 days, and I didn't proof read in detail after that Comments by reviewer: also, if it gets published today, please substitute 'Sunday' with 'yesterday' Questions about the above? Ask. If possible, please address the above issues then resubmit the article for another review (by replacing {{tasks}} in the article with {{review}}). This talk page will be updated with subsequent reviews.

Graphics

There are a couple of interesting graphics at w:Chile mining accident that you might find useful in this article. --InfantGorilla (talk) 07:25, 31 August 2010 (UTC)

Review of revision 1087683 [Passed]

Revision 1087683 of this article has been reviewed by Red Thunder (talk · contribs) and has passed its review at 19:25, 2 September 2010 (UTC). Copyright: Passed Newsworthiness: Passed Verifiability: Passed NPOV: Passed Style: Passed Comments by reviewer: Concerns have been addressed. Quite a good piece of writing. red-thunder. 19:25, 2 September 2010 (UTC) The reviewed revision should automatically have been edited by removing {{Review}} and adding {{Publish}} at the bottom, and the edit sighted; if this did not happen, it may be done manually by a reviewer.

Revision 1087683 of this article has been reviewed by Red Thunder (talk · contribs) and has passed its review at 19:25, 2 September 2010 (UTC). Copyright: Passed Newsworthiness: Passed Verifiability: Passed NPOV: Passed Style: Passed Comments by reviewer: Concerns have been addressed. Quite a good piece of writing. red-thunder. 19:25, 2 September 2010 (UTC) The reviewed revision should automatically have been edited by removing {{Review}} and adding {{Publish}} at the bottom, and the edit sighted; if this did not happen, it may be done manually by a reviewer.

Calculation of the drilling debris mass

From the Wikipedia English discussion page on: 2010 Copiapó mining accident.

Calculation of the volume of drilling debris to be evacuated by the miners themselves.

This is in fact the quarter or the half of the 3000 to 4000 tons erroneously reported in the WikiNews article:

Race to save Chilean miners trapped underground from spiralling into depression continues

"Quotation from WikiNews (as seen on September 4th, 2010)":

"But over the weekend, The New York Times reported that the "miners who have astonished the world with their discipline a half-mile underground will have to aid their own escape — clearing 3,000 to 4,000 tons of rock that will fall as the rescue hole is drilled, the engineer in charge of drilling said Sunday ..."

In fact, the miners will have to remove by themselves a total mass of fine rock debris (drilling cuttings) estimated between 700 and 1500 tons considering a borehole diameter of 70 cm or 1 m respectively, with a depth of 688 m and a rock density of 2.7 ton per cubic meter. See the table below for the volume and mass calculations easy to verify.

And it is already a large mass to be continuously evacuated by the miners.

Calculation of the drilling debris mass

Diameter	D	(m)	0,20	0,50	0,66	0,70	0,80	0,90	1,00	1,50	1,65
Radius	r	(m)	0,10	0,25	0,33	0,35	0,40	0,45	0,50	0,75	0,83
Section area	S	(m2)	0,031	0,196	0,342	0,385	0,503	0,636	0,785	1,767	2,138
Depth	L	(m)	688	688	688	688	688	688	688	688	688
Volume	V	(m3)	22	135	235	265	346	438	540	1216	1471
Density	rho	(ton/m3)	2,7	2,7	2,7	2,7	2,7	2,7	2,7	2,7	2,7
Mass	m	(ton)	58	365	636	715	934	1182	1459	3283	3972

Oops, I realized I was not logged on Wikinews and that I forgot to sign. Cheers, Shinkolobwe (talk) 17:57, 4 September 2010 (UTC)