Wading Bridge in Des Moines

05.30.15

Our rivers determine our land, livelihood, and lives, and the rivers of Des Moines are a force. It is with respect, honor, and excitement that we ready to install “Wading Bridge” on the Raccoon River in the coming days. As humans it is easy to forget how very dependent we are on each other, and on the built and more natural worlds we inhabit. Bridges are monuments. Over borders difficult to cross, they bring us together. Yet some of the elements we see as borders may not need to be, and it may be time to redefine them. To explain “Wading Bridge” is to explain the Value of both perceptual and physical experience, and the important practice of re-seeing. Crossing “Wading Bridge” and getting our feet wet can allow us a momentary intimacy with the Raccoon river. For me, “Wading Bridge” is about living with tumultuous change. Sometimes our bridges may be under water, but in unexpected ways they will still bring us together.

Raw Notes

Mining Map – Layer 1

Chemicals and minerals:

Lithum:

Saudi Arabia, Afganistan, and:

Country Production Reserves[note 2]
World total 34,000 13,000,000
Chile 12,600 7,500,000
Australia 9,260 970,000
People’s Republic of China 5,200 3,500,000
Argentina 3,200 850,000
Portugal 820 10,000
Canada (2010) 480 180,000
Zimbabwe 470 23,000
Brazil 160 64,000

Lithium cobalt oxide (LiCoO2) is widely used in lithium ion battery cathodes. The material is composed of cobalt oxide layers in which the lithium is intercalated. During discharging the lithium intercalated between the layers is set free as lithium ion.[55] Nickel-cadmium[56] (NiCd) and nickel metal hydride[57] (NiMH) batteries also contain significant amounts of cobalt; the cobalt improves the oxidation capabilities of nickel in the battery.[56]

Cobalt:

The main ores of cobalt are cobaltite, erythrite, glaucodot and skutterudite (see above), but most cobalt is obtained not by active mining of cobalt ores, but rather by reducing cobalt compounds that occur as by-products of nickel and copper mining activities. In 2005, the copper deposits in the Katanga Province (former Shaba province) of the Democratic Republic of the Congo were the top producer of cobalt with almost 40% world share

Copper:

This is list of countries by copper production is mostly based on British Geological Survey accessed in June 2008. Some 2013 updates are provided for the top 10 producers based on USGS[1]

Rank Country/Region 2006 Copper production (tonnes) 2013 Copper production (tonnes)
World 15,100,000 17,900,000
1 Chile 5,360,800 5,700,000
2 United States 1,220,000 1,220,000
3 Peru 1,049,933 1,300,000
4 China 915,000 1,650,000
5 Australia 875,000 990,000
6 Indonesia 817,796 380,000
7 Russia 675,000 930,000
8 Zambia 502,998 830,000
9 Canada 606,958 630,000
10 Poland 497,200 430,000
11 Kazakhstan 459,200 440,000
12 Iran 249,100 255,000[2]
13 Papua New Guinea 194,355
14 Argentina 180,144
15 Brazil 147,836
16 DR Congo 131,400
17 Mongolia 129,675
18 Mexico 129,042
19 Uzbekistan 103,500
20 Bulgaria 99,000
21 South Africa 89,700
22 Sweden 86,746
23 Serbia 80,000
24 Portugal 78,660
25 Laos 60,803
26 India 31,000
27 Turkey 30,000
28 Botswana 24,255
29 Burma 19,500
30 Pakistan 18,700
31 Armenia 17,800
32 Philippines 17,700
33 Nigeria 16,200
34 Georgia 14,600
35 Finland 13,000
36 Romania 12,179
37 North Korea 12,000
38 Vietnam 11,400
39 Spain 8,700
40 Macedonia 7,054
41 Namibia 6,262
42 Mauritania 5,031
43 Morocco 4,500
44 Tanzania 3,285
45 Zimbabwe 2,581
46 Japan 1,000
47 Cyprus 900
48 Saudi Arabia 604
49 Colombia 600
50 Albania 400

Silver:

Photography used 30.98% of the silver consumed in 1998 in the form of silver nitrate and silver halides. In 2001, 23.47% was used for photography, while 20.03% was used in jewelry, 38.51% for industrial uses, and only 3.5% for coins and medals. The use of silver in photography has rapidly declined, due to the lower demand for consumer color film from the advent of digital technology; since 2007, of the 907 million ounces of silver in supply, just 117.6 million ounces (13%) were consumed by the photographic sector, about 50% of the amount used in photography in 1998. By 2010, the supply had increased by about 10% to 1056.8 million ounces, of which 72.7 million ounces were used in the photographic sector, a decline of 38% compared with 2007.[24]

Some electrical and electronic products use silver for its superior conductivity, even when tarnished. The primary example of this is in high quality RF connectors. The increase in conductivity is also taken advantage of in RF engineering at VHF and higher frequencies, where conductors often cannot be scaled by 6%, due to tuning requirements, e.g. cavity filters. As an additional example, printed circuits and RFID antennas can be made using silver paints,[7][25] and computer keyboards use silver electrical contacts. Silver cadmium oxide is used in high-voltage contacts because it can withstand arcing.

Some manufacturers produce audio connector cables, speaker wires, and power cables using silver conductors, which have a 6% higher conductivity than ordinary copper ones of identical dimensions, but cost much more. Though debatable, many hi-fi enthusiasts believe silver wires improve sound quality.[citation needed]

Small devices, such as hearing aids and watches, commonly use silver oxide batteries due to their long life and high energy-to-weight ratio. Another usage is high-capacity silver-zinc and silver-cadmium batteries.

The principal sources of silver are the ores of copper, copper-nickel, lead, and lead-zinc obtained from Peru, Bolivia, Mexico, China, Australia, Chile, Poland and Serbia.[7] Peru, Bolivia and Mexico have been mining silver since 1546, and are still major world producers. Top silver-producing mines are Cannington (Australia), Fresnillo (Mexico), San Cristobal (Bolivia), Antamina (Peru), Rudna (Poland), and Penasquito (Mexico).[51] Top near-term mine development projects through 2015 are Pascua Lama (Chile), Navidad (Argentina), Jaunicipio (Mexico), Malku Khota (Bolivia),[52] and Hackett River (Canada).[51] In Central Asia, Tajikistan is known to have some of the largest silver deposits in the world.[53]

Resin:

A few plants produce resins with different compositions, most notably Jeffrey Pine and Gray Pine, the volatile components of which are largely pure n-heptane with little or no terpenes.

Sulfur:

Today, sulfur is produced from petroleum, natural gas, and related fossil resources, from which it is obtained mainly as hydrogen sulfide. The resulting hydrogen sulfide from this process, and also as it occurs in natural gas, is converted into elemental sulfur by the Claus process. Owing to the high sulfur content of the Athabasca Oil Sands, stockpiles of elemental sulfur from this process now exist throughout Alberta, Canada.[27] Another way of storing sulfur is as a binder for concrete, the resulting product having many desirable properties (see sulfur concrete).[28]

The world production of sulfur in 2011 amounted to 69 million tonnes (Mt), with more than 15 countries contributing more than 1 Mt each. Countries producing more than 5 Mt are China (9.6), US (8.8), Canada (7.1) and Russia (7.1).[29] While the production has been slowly increasing from 1900 to 2010, the price was much less stable, especially in the 1980s and around 2010.[30]

This bubble map shows the global distribution of sulphuric acid output in 2000 as a percentage of the top producer (China – 24,270,000 tonnes). This map is consistent with incomplete set of data too as long as the top producer is known. It resolves the accessibility issues faced by colour-coded maps that may not be properly rendered in old computer screens. Data was extracted on 16th June 2007. Source – http://unstats.un.org/unsd/cdb/cdb_source_xrxx.asp?source_code=6 Based on :Image:BlankMap-World.png

Coltan/Tantalum:

1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Australia 41.7% 45.7% 56.1% 54.8% 71.5% 75.9% 71.0% 73.8% 42.4% 54.3% 45.3% 55.9% 63.9% 59.8% 56.4% 61.9% 54.9% 50.6% 46.8% 12.1%
Brazil 22.7% 17.6% 15.0% 16.1% 15.0% 13.9% 14.1% 13.4% 39.8% 25.6% 17.8% 17.8% 13.6% 15.6% 14.9% 15.7% 20.2% 20.6% 15.1% 26.9%
Canada 21.7% 19.5% 12.0% 8.1% 10.8% 9.1% 14.1% 12.0% 7.3% 8.4% 5.3% 6.5% 3.9% 4.3% 4.0% 4.6% 6.4% 5.2% 3.4% 3.7%
D.R. Congo 2.5% 3.4% 2.0% 1.9% 0.3% 0.3% 0.0% 0.0% 0.0% 0.0% 12.1% 5.1% 2.0% 1.2% 1.4% 2.4% 1.6% 8.1% 8.4% 13.0%
Africa. excl.DR Congo 11.4% 13.8% 14.8% 19.0% 2.4% 0.8% 0.8% 0.7% 10.5% 11.8% 19.4% 14.7% 16.5% 19.1% 23.3% 15.5% 16.8% 15.5% 26.3% 44.3%

Phenol: Phenol is also a recoverable byproduct of coal pyrolysis.

Chromium:

Chromium is mined as chromite (FeCr2O4) ore.[10] About two-fifths of the chromite ores and concentrates in the world are produced in South Africa, while Kazakhstan, India, Russia, and Turkey are also substantial producers. Untapped chromite deposits are plentiful, but geographically concentrated in Kazakhstan and southern Africa.[11]

RAW MATERIAL (used in several camera components)

Oil:

# Producing Nation 103bbl/d (2006) 103bbl/d (2007) 103bbl/d (2008) 103bbl/d (2009) Present Share
1 Saudi Arabia (OPEC) 10,665 10,234 10,782 9,760 11.8%
2 Russia1 9,677 9,876 9,789 9,934 12.0%
3 United States1 8,331 8,481 8,514 9,141 11.1%
4 Iran (OPEC) 4,148 4,043 4,174 4,177 5.1%
5 China 3,846 3,901 3,973 3,996 4.8%
6 Canada2 3,288 3,358 3,350 3,294 4.0%
7 Mexico1 3,707 3,501 3,185 3,001 3.6%
8 United Arab Emirates(OPEC) 2,945 2,948 3,046 2,795 3.4%
9 Kuwait (OPEC) 2,675 2,613 2,742 2,496 3.0%
10 Venezuela (OPEC) 1 2,803 2,667 2,643 2,471 3.0%
11 Norway1 2,786 2,565 2,466 2,350 2.8%
12 Brazil 2,166 2,279 2,401 2,577 3.1%
13 Iraq (OPEC) 3 2,008 2,094 2,385 2,400 2.9%
14 Algeria (OPEC) 2,122 2,173 2,179 2,126 2.6%
15 Nigeria (OPEC) 2,443 2,352 2,169 2,211 2.7%
16 Angola (OPEC) 1,435 1,769 2,014 1,948 2.4%
17 Libya (OPEC) 1,809 1,845 1,875 1,789 2.2%
18 United Kingdom 1,689 1,690 1,584 1,422 1.7%
19 Kazakhstan 1,388 1,445 1,429 1,540 1.9%
20 Qatar (OPEC) 1,141 1,136 1,207 1,213 1.5%
21 Indonesia 1,102 1,044 1,051 1,023 1.2%
22 India 854 881 884 877 1.1%
23 Azerbaijan 648 850 875 1,012 1.2%
24 Argentina 802 791 792 794 1.0%
25 Oman 743 714 761 816 1.0%
26 Malaysia 729 703 727 693 0.8%
27 Egypt 667 664 631 678 0.8%
28 Colombia 544 543 601 686 0.8%
29 Australia 552 595 586 588 0.7%
30 Ecuador (OPEC) 536 512 505 485 0.6%
31 Sudan 380 466 480 486 0.6%
32 Syria 449 446 426 400 0.5%
33 Equatorial Guinea 386 400 359 346 0.4%
34 Thailand 334 349 361 339 0.4%
35 Vietnam 362 352 314 346 0.4%
36 Yemen 377 361 300 287 0.3%
37 Denmark 344 314 289 262 0.3%
38 Gabon 237 244 248 242 0.3%
39 South Africa 204 199 195 192 0.2%
40 Turkmenistan No data 180 189 198 0.2%
41 Trinidad and Tobago 181 179 176 174 0.1%

Source: U.S. Energy Information Administration

Wolframite:

Tungsten is found in the minerals wolframite (ironmanganese tungstate, (Fe,Mn)WO4), scheelite (calcium tungstate, (CaWO4), ferberite (FeWO4) andhübnerite (MnWO4). China produced 51,000 tonnes of tungsten concentrate in 2009, which was 83% of the world output. In the prelude to WWII China’s production of tungsten played a role as China could use this leverage to demand material assistance from the US government.[23] Most of the remaining production originated from Russia (2,500 t), Canada (1,964 t), Bolivia (1,023 t), Austria (900 t), Portugal (900 t), Thailand (600 t), Brazil (500 t), Peru (500 t) and Rwanda (500 t).[24] Tungsten is also considered to be a conflict mineral due to the unethical mining practices observed in the Democratic Republic of the Congo.[25][26] Rising prices in 2014 have enabled works to reopen the disused Hemerdon Bal tungsten-tine mine in Plymouth in the United Kingdom.[27]

Cassiterite (tin):

Most sources of cassiterite today are found in alluvial or placerdeposits containing the resistant weathered grains. The best sources of primary cassiterite are found in the tin mines of Bolivia, where it is found in hydrothermal veins. Rwanda has a nascent cassiterite mining industry. Fighting over cassiterite deposits (particularly inWalikale) is a major cause of the conflict waged in eastern parts of the Democratic Republic of the Congo.[5][6] This has led to cassiterite being considered a conflict mineral.

Cassiterite is a widespread minor constituent of igneous rocks. The Bolivian veins and the old exhausted workings of Cornwall, England, are concentrated in high temperature quartz veins and pegmatites associated with granitic intrusives. The veins commonly contain tourmaline, topaz, fluorite, apatite, wolframite, molybdenite, and arsenopyrite. The mineral occurs extensively in Cornwall as surface deposits on Bodmin Moor, for example, where there are extensive traces of an hydraulic mining method known as streaming. The current major tin production comes from placer or alluvial deposits in Malaysia, Thailand, Indonesia, the Maakhir region of Somalia, and Russia.Hydraulic mining methods are used to concentrate mined ore, a process which relies on the high specific gravity of the SnO2 ore, of about 7.0.

Steel:

Rank Country/Region 2007 2008 2009 2010 2011 2012 2013
World 1,351.3 1326.5 1,219.7 1,413.6 1,490.1 1552.9 1607.2
1 People’s Republic of China 494.9 500.3 573.6 626.7 683.3 724.7 779.0
European Union 210.2 198.2 139.3 172.8 177.7 168.6 165.6
2 Japan 120.2 118.7 87.5 109.6 107.6 107.2 110.6
3 United States 98.1 91.4 58.2 80.6 86.2 88.6 87.0
4 India 53.5 57.8 62.8 68.3 72.2 77.3 81.2
5 Russia 72.4 68.5 60.0 66.9 68.7 70.6 69.4
6 South Korea 51.5 53.6 48.6 58.5 68.5 69.3 66.0
7 Germany 48.6 45.8 32.7 43.8 44.3 42.7 42.6
8 Turkey 25.8 26.8 25.3 29.0 34.1 35.9 34.7
9 Brazil 33.8 33.7 26.5 32.8 35.2 34.7 34.2
10 Ukraine 42.8 37.3 29.9 33.6 35.3 32.9 32.8
11 Italy 31.6 30.6 19.7 25.8 28.7 27.2 24.1
12 Taiwan 20.9 19.9 15.7 19.6 22.7 20.7 22.3
13 Mexico 17.6 17.2 14.2 17.0 18.1 18.1 18.4 est
14 France 19.3 17.9 12.8 15.4 15.8 15.6 15.7
15 Iran 10.1 10.0 10.9 12.0 13.0 14.5 15.4
16 Spain 19.0 18.6 14.3 16.3 15.6 13.6 13.7
17 Canada 15.6 14.8 9.0 13.0 13.1 13.5 12.5 est
18 United Kingdom 14.3 13.5 10.1 9.7 9.5 9.6 11.9
19 Poland 10.6 9.7 7.2 8.0 8.8 8.4 8.0
20 Austria 7.6 7.6 5.7 7.2 7.5 7.4 7.9
21 South Africa 9.1 8.3 7.5 8.5 6.7 7.1 7.2 est
22 Belgium 10.7 10.7 5.6 8.1 8.1 7.4 7.1
23 Egypt 6.2 6.2 5.5 6.7 6.5 6.6 6.8
24 Netherlands 7.4 6.8 5.2 6.7 6.9 6.9 6.7 est
25 Malaysia 6.9 6.4 4.0 4.1 5.9 5.6 5.9 est
26 Vietnam 2.3 2.7 2.7 2.7 4.9 5.3 5.6
27 Saudi Arabia 4.6 4.7 4.7 5.0 5.3 5.2 5.4
28 Czech Republic 7.1 6.4 4.6 5.2 5.6 5.1 5.2
29 Argentina 5.4 5.5 4.0 5.1 5.7 5.0 5.2
30 Australia 7.9 7.6 5.2 7.3 6.4 4.9 4.6 est
31 Slovakia 5.1 4.5 3.7 4.6 4.2 4.4 4.5
32 Sweden 5.7 5.2 2.8 4.8 4.9 4.3 4.4
33 Finland 4.4 4.4 3.1 4.0 4.0 3.8 3.5
34 Thailand 5.6 5.2 3.6 3.7 4.2 3.3 3.5 est
35 Kazakhstan 4.8 4.3 4.1 4.3 4.7 3.9 3.3 est
36 Romania 6.3 5.0 2.7 3.9 3.8 3.3 2.9
37 United Arab Emirates 0.09 0.09 0.2 0.5 2.0 2.4 2.9 est
38 Indonesia 4.2 3.9 3.5 3.6 3.6 2.3 2.4 est
39 Belarus 2.4 2.6 2.4 2.5 2.6 2.7 2.3
40 Venezuela 5.0 4.2 3.8 2.2 3.1 2.4 2.3
Others[6] 30.7 (est.) 28.6 (est.) 23.3 (est.) 26.5 (est.) 29.9 29.5 28.4

Chemicals:

Silver halide – A halide is made out of two parts, a halogen atom, (produced by a mineral or salt) and a less or more electronegative atom, to create for example fluoride or chloride.

Amoniac – Ammonia is a compound of nitrogen and hydrogen.

Gelatin – obtained from various animal products.

Alum – To obtain alum from alunite crystals it is calcined and then exposed to the action of air for a considerable time. During this exposure it is kept continually moistened with water, so that it ultimately falls to a very fine powder

Formaldehyd- is produced industrially by the catalytic oxidation of methanol.

http://www.jazdchemicals.com/chemyellowpages/leaf/Organic-Compounds/Aldehydes/Formaldehyde.htm

Aldehydes India 1247, Sector-15,Faridabad, Haryana, (India)
Lanxess Formalin Facility, Krefeld-Uerdingen, Germany

US: http://www.thomasnet.com/products/formaldehyde-31173800-1.html

http://www.alibaba.com/showroom/formalin.html

http://www.made-in-china.com/products-search/hot-china-products/Formaldehyde.html

http://www.presstv.com/detail/2013/03/04/291842/iran-launches-largest-me-formalin-plant/

http://www.tradeindia.com/manufacturers/formaldehyde-plant.html

suppliers:

http://supplier.ec21.com/formalin.html

http://www.alibaba.com/formalin-suppliers.html

http://www.justdial.com/Mumbai/Formalin-Suppliers/ct-1000455757

http://www.nzchemicalsuppliers.co.nz/list/search?search=Formaldehyde

http://www.chemnet.com/Other-Regions/Products/Formalin/Suppliers-0-0.html

http://www.chemindustry.com/apps/search?category_id=11&search_term=FORMALDEHYDE

Glyoxal prepared by the gas-phase oxidation of ethylene glycol (used in the manufacture of polyester fibers for for example PET bottles)

Saponin (plant-derived from for example the maple tree)

Suppliers:

http://dir.indiamart.com/impcat/saponins.html

http://www.alibaba.com/showroom/saponin-manufacturers.html

Phenol (from petroleum)

http://www.shell.com/global/products-services/solutions-for-businesses/chemicals/products/phenol-acetone-nonene/phenol.html

http://www.indianindustry.com/solvents/phenol.html

http://www.jazdchemicals.com/chemyellowpages/leaf/Organic-Compounds/Phenol.htm

http://www.doverchem.com/products/alkylphenols.aspx

http://gulfbusiness.tradeholding.com/default.cgi/action/viewcompanies/buyers-importers-distributors/phenol/

http://www.ineos.com/businesses/ineos-phenol/

http://www.thomasnet.com/products/phenolic-resins-67620302-1.html

Thymol (organic from thyme oil)

Suppliers:

http://www.alibaba.com/products/F0/thymol_supplier/CID830.html

http://dir.indiamart.com/impcat/thymol-crystals.html