World's Wealthiest People

Forbes released its annual list of the world's wealthiest people, and now the nearly 7 billion of us who aren't on it are searching for it.

No. 1 on the list is Carlos Slim, the Mexican telecommunications magnate who's worth an estimated $74 billion. Slim beat out Bill Gates, No. 2 on the list at $56 billion, by a fat margin after his wealth grew by more than one-third last year. Perennial Top 10-er Warren Buffett appears at No. 3 with $50 billion of worth; and the richest woman, Christy Walton of the Wal-Mart empire, comes in at No. 10.

The number of billionaires in the world is up by 200 from last year to 1,210, with a combined wealth of $4.5 trillion.

And, of course, with $1 billion being cool and all, six members of the Facebook management clan made the list, including Mark Zuckerberg at No. 52.

Steel tycoon Lakshmi Mittal and Reliance chairman Mukesh Ambani were counted among the world's ten richest persons as 50 Indians made it to the Forbes list of World Billionaires 2011.

Here is a complete list of Indian billionaires in order of India Rank, World Rank, Name, Net Worth, Age, Source:

1.. 6 Lakshmi Mittal $31.1 B 60 Steel
2.. 9 Mukesh Ambani $27 B 53 petrochemicals, oil & gas
3.. 36 Azim Premji $16.8 B 65 Software
4.. 42 Shashi & Ravi Ruia $15.8 B 67 Diversified
5.. 56 Savitri Jindal & family $13.2 B 60 Steel
6.. 81 Gautam Adani $10 B 48 commodities, infrastructure
7.. 97 Kumar Birla $9.2 B 43 commodities
8.. 103 Anil Ambani $8.8 B 51 Diversified
9.. 110 Sunil Mittal & family $8.3 B 53 telecom
10. 130 Adi Godrej & family $7.3 B 68 Diversified
11. 130 Kushal Pal Singh $7.3 B 79 real estate
12. 154 Anil Agarwal $6.4 B 57 mining, metals
13. 159 Dilip Shanghvi $6.1 B 55 pharmaceuticals
14. 182 Shiv Nadar $5.6 B 65 Information technology
15. 265 Malvinder & Shivinder Singh $4.1 B 38 healthcare
16. 310 Kalanithi Maran $3.5 B 45 media
17. 347 Uday Kotak $3.2 B 51 banking
18. 376 Micky Jagtiani $3 B 59 Retail
19. 393 Subhash Chandra & family $2.9 B 60 media
20. 440 Pankaj Patel $2.6 B 57 pharmaceuticals
21. 440 Indu Jain $2.6 B 74 media
22. 440 G. M. Rao $2.6 B 60 infrastructure
23. 512 Cyrus Poonawalla $2.3 B 69 biotech
24. 540 Rajan Raheja & family $2.2 B 56 Diversified
25. 564 Desh Bandhu Gupta $2.1 B 73 pharmaceuticals
26. 595 N.R. Narayana Murthy & family $2 B 64 Software
27. 595 Gautam Thapar $2 B 50 engineering, paper
28. 595 Sudhir & Samir Mehta $2 B 56 Diversified
29. 595 Aloke Lohia $2 B 52 chemicals
30. 651 Venugopal Dhoot $1.9 B 59 electronics
31. 651 Chandru Raheja $1.9 B 70 real estate
32. 692 Nandan Nilekani & family $1.8 B 55 Software
33. 736 Ajay Kalsi $1.7 B N/A oil
34. 782 Rahul Bajaj $1.6 B 72 motorcycles
35. 782 Senapathy Gopalakrishnan & family $1.6 B 55 Software
36. 833 Brijmohan Lall Munjal $1.5 B 87 motorcycles
37. 833 K. Anji Reddy $1.5 B 69 pharmaceuticals
38. 879 Vijay Mallya $1.4 B 55 liquor
39. 879 Ajay Piramal $1.4 B 55 pharmaceuticals
40. 879 Vikas Oberoi $1.4 B 40 real estate
41. 938 Baba Kalyani $1.3 B 62 Engineering
42. 938 Rama Prasad Goenka $1.3 B 81 Diversified
43. 993 Keshub Mahindra $1.2 B 87 Diversified
44. 993 K Dinesh & family $1.2 B 56 Software
45. 993 Rakesh Jhunjhunwala $1.2 B 50 Investments
46. 993 Brij Bhushan Singal $1.2 B 74 Steel
47. 1057 Yusuf Hamied & family $1.1 B 74 Pharmceuticals
48. 1057 S.D. Shibulal & family $1.1 B 56 Software
49. 1057 Bhupendra Kumar Modi $1.1 B 62 telecom
50. 1057 Mangal Prabhat Lodha $1.1 B 55 real estate

Forbes magazine's 2011 Billionaires Video

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Sulphur mining in an active volcano

Matches and white sugar are among the products made with sulphur hewn by hand from an active volcano in Indonesia. Is this one of the most dangerous jobs in the world?

Kawah Ijen volcano

• 2,600m (8,660ft) tall, last erupted 1999 with ash but not magma
• In Pacific 'Ring of Fire' of 130 active volcanoes
• Yellow area, left of picture, is solidified sulphur
• Crater lake 1km across, and its water has pH of 0.5 - similar to battery acid

• Watch mountain clips from Human Planet

The traditional sulphur miners of East Java bear the scars of their labour - poisoned lungs and skin criss-crossed with burns and scars.

Several hundred men work in the heart of Ijen volcano in East Java, Indonesia. Each day, they collect yellow lumps of sulphur that solidify beside its acidic crater lake. Once processed, the sulphur is used to bleach sugar, make matches and fertiliser, and vulcanise rubber in factories at home and abroad.
Filmed for the BBC's Human Planet, the miners carry 90kg loads up 200 metres out of the crater and back down the volcano's outer slopes to a weighing station - a journey they make several times a day.
"There are many big mountains but only one gives us the sulphur we need," says Sulaiman, 31, who has mined the crater for 13 years.
The miners have little in the way of protective gear beyond a damp cloth to cover the nose and mouth. Gloves and gas masks are an unaffordable luxury for men paid $10 to $15 a day.
In the past 40 years, 74 miners have died after being overpowered by fumes that can suddenly swirl from fissures in the rock. The poisonous clouds are not steam, but hydrogen sulphide and sulphur dioxide gases so concentrated they burn the eyes and throat, and can eventually dissolve the miners' teeth.
During filming, the BBC crew was enveloped in a toxic cloud 40 times the UK's safe breathing level (no limits exist for the miners). Corrosive air-borne particles ate into the cameras, which promptly broke down.
It is a method of sulphur extraction that has all but died out, says volcanologist Clive Oppenheimer, of Cambridge University. "Until the late 19th Century, there were sulphur mines in volcanic countries such as Italy, New Zealand, Chile and Indonesia."
Eruptions, and the advent of new processes, led to the closure of most mining operations.
"There are still volcanic sulphur mines in the Andes, but these are mechanised," says Dr Oppenheimer.

An active vent close to the lake shore is used for the sulphur mining operation. The water in the crater - which is one of the world's largest - is acidic enough to dissolve clothes, eat through metal, and cause breathing problems.

Pipes are driven into the fissures in the rock to extract sulphur from the bowels of the mountain. It is blood red when molten, and turns yellow as it cools and solidifies.

The miners break the cooled sulphur into chunks, and load up their wicker baskets for the 200 metre climb back up out of the crater.

Each man carries up to twice his body weight from the crater to the weighing station part way down the mountain.