About.Ag

All About Silver - ... the buck stops here ...
[16 Sep 2022: Switched to dynamic web pages; some features/pages may be changed/gone]

SLV Bar Analysis for 19 Mar 2014 (from 12 Mar 2014 )

Quick Links: Warehouse Summary, Refinery Summary, Duplicate Serial Number & Weight, Bars Removed, Bars Added, Serial Number Changes, Statistics, Notes.

Warehouse Summary

Refiner	Start	End	Added	Removed	Serial Only Duplicates	Serial & Weight Duplicates
JPM New York (JPMN)	20871 bars 20,841,456.5 oz	20871 bars 20,841,456.5 oz	0 bars 0.0 oz	0 bars 0.0 oz	0	0
Johnson Matthey UK. Royston (JMUK)	0 bars 0.0 oz	0 bars 0.0 oz	0 bars 0.0 oz	0 bars 0.0 oz	0	0
HSBC London (HSBC)	0 bars 0.0 oz	0 bars 0.0 oz	0 bars 0.0 oz	0 bars 0.0 oz	0	0
Brinks London (BRIU)	158836 bars 154,962,205.0 oz	158836 bars 154,962,205.0 oz	0 bars 0.0 oz	0 bars 0.0 oz	11802	21
Brinks London C (BRIC)	60989 bars 59,123,619.7 oz	60989 bars 59,123,619.7 oz	0 bars 0.0 oz	0 bars 0.0 oz	5103	5
Brinks London A (BRIA)	0 bars 0.0 oz	0 bars 0.0 oz	0 bars 0.0 oz	0 bars 0.0 oz	0	0
Via Mat International (VIAM)	0 bars 0.0 oz	0 bars 0.0 oz	0 bars 0.0 oz	0 bars 0.0 oz	0	0
JPM London V (JPMV)	94935 bars 91,876,772.0 oz	94935 bars 91,876,772.0 oz	0 bars 0.0 oz	0 bars 0.0 oz	11977	9
JPM London A (JPMA)	0 bars 0.0 oz	0 bars 0.0 oz	0 bars 0.0 oz	0 bars 0.0 oz	0	0
Total (n/a)	335631 bars 326,804,053.2 oz	335631 bars 326,804,053.2 oz	0 bars 0.0 oz	0 bars 0.0 oz	57766	72

Refinery Summary

Refiner	# Bars	Ounces	Average Oz	Stand. Dev.	Serial Only Duplicates	Serial & Weight Duplicates	# Weights
AMax Inc. USA (AMA)	659 bars	657,710.0 Oz	998.0	30.5	1	0	473
Almalyk Uzbekistan (ALM)	2359 bars	2,283,383.9 Oz	967.9	20.0	224	1	785
Anhui Tongda Copper Ltd China (ANH)	2 bars	1,929.4 Oz	964.7	1.8	0	0	2
Argor-Heraeus SA Switzerland (ARG)	340 bars	326,523.6 Oz	960.4	25.3	0	0	286
Asahi Pretec Corp Japan (AS1)	1611 bars	1,572,397.0 Oz	976.0	8.4	0	0	347
Asarco Various (AS2)	3 bars	2,964.2 Oz	988.1	22.8	0	0	3
Asarco Inc Amarillo (AS3)	3489 bars	3,470,264.2 Oz	994.6	21.9	3	1	918
Aurubis AG Germany (AUR)	7120 bars	6,206,310.2 Oz	871.7	31.1	0	0	1431
Australian Gold Refineries (AUS)	2450 bars	1,839,530.9 Oz	750.8	29.4	2	0	1026
Boliden Mineral Sweden (BOL)	261 bars	269,149.3 Oz	1031.2	33.1	0	0	238
Britannia Refined Metals U.K (BRI)	22953 bars	22,292,934.5 Oz	971.2	57.3	7775	6	2891
Burma Mines (BUR)	13 bars	15,252.3 Oz	1173.3	19.8	0	0	13
Comptoir Lyon-Alemand FRA (COM)	621 bars	600,553.1 Oz	967.1	40.7	15	0	507
Cominco Ltd Tadanac Canada (CO1)	1951 bars	2,053,197.0 Oz	1052.4	18.0	5	0	694
Daye Non-Ferrous Metals China (DAY)	650 bars	632,158.4 Oz	972.6	26.6	1	0	475
Degussa Frankfurt (DEG)	4474 bars	4,709,942.7 Oz	1052.7	42.5	200	0	1578
Doe Run Peru SSL (DOE)	2931 bars	3,064,851.0 Oz	1045.7	24.5	687	0	872
Dowa Mining Japan (DOW)	1660 bars	1,621,903.3 Oz	977.1	20.3	0	0	707
ERANDS. Southern Copper Ltd. (ERA)	120 bars	128,143.9 Oz	1067.9	17.8	0	0	111
Engelhard Clal Paris (EN2)	5 bars	5,193.2 Oz	1038.6	72.4	0	0	5
Engelhard UK (EN3)	94 bars	94,156.0 Oz	1001.7	50.2	0	0	93
Engelhard USA (EN4)	294 bars	293,829.5 Oz	999.4	36.7	0	0	266
Espanola Metales Spain (ESP)	368 bars	347,329.6 Oz	943.8	46.5	0	0	324
Great Wall Ref China (GRE)	1118 bars	1,095,314.3 Oz	979.7	17.3	303	0	478
Guangxi Chengyuan Mining China (GUA)	1467 bars	1,416,866.4 Oz	965.8	21.2	0	0	673
Handy Harman USA (HAN)	10619 bars	10,598,129.7 Oz	998.0	38.1	19	0	1797
Henan Yuguang Gold and Lead Co Ltd (HEN)	16362 bars	16,000,290.9 Oz	977.9	25.0	35	0	1377
Heraeus Germany (HER)	170 bars	162,469.3 Oz	955.7	43.7	0	0	123
Hoboken Belgium (HOB)	3804 bars	3,742,869.5 Oz	983.9	32.9	87	0	1266
Hunan Zhuzhou China (HUN)	320 bars	320,619.6 Oz	1001.9	17.3	0	0	266
Inco ltd, Canada (INC)	659 bars	686,467.1 Oz	1041.7	27.4	6	0	491
Industrial Minera Mexico (IND)	764 bars	804,955.0 Oz	1053.6	29.2	2	0	535
Inner Mongolia Qiankun Gold & Silver (INN)	15663 bars	15,369,585.6 Oz	981.3	22.7	4570	7	1369
JBR Recovery UK (JBR)	883 bars	1,002,477.0 Oz	1135.3	75.5	0	0	648
Jiangxi Copper Co Ltd (JIA)	5951 bars	6,092,629.8 Oz	1023.8	30.8	0	0	1340
John Betts UK (JO1)	273 bars	294,853.5 Oz	1080.0	71.4	0	0	244
Johnson Matthey Canada (JO3)	216 bars	217,490.9 Oz	1006.9	33.7	0	0	197
Johnson Matthey UK (JO4)	2113 bars	2,122,083.2 Oz	1004.3	38.1	0	0	1084
Johnson Matthey USA (JO6)	6801 bars	6,760,425.3 Oz	994.0	35.3	4	0	1525
Johnson Matthey USA (JO5)	14799 bars	14,639,432.3 Oz	989.2	31.0	0	0	1644
JSC Ekaterinburg Non-Ferrous Metals (JSC)	658 bars	642,652.6 Oz	976.7	21.6	0	0	449
KCM SA Bulgaria (KCM)	674 bars	662,815.4 Oz	983.4	13.7	105	0	365
KGHM Poland (KGH)	9130 bars	9,237,108.7 Oz	1011.7	15.4	446	0	872
Kazzinc. Kazakhstan (former) (KAZ)	2688 bars	2,607,594.8 Oz	970.1	21.8	0	0	864
Kazakhmys PLC Kazakhstan (KA2)	7272 bars	7,072,565.7 Oz	972.6	19.8	0	0	998
Kennecott Copper USA (KEN)	295 bars	302,263.5 Oz	1024.6	45.5	0	0	271
Korea Zinc Co Ltd (KOR)	8619 bars	8,398,144.3 Oz	974.4	17.9	0	0	939
Krasnoyarsk Russia (KRA)	16498 bars	15,757,472.2 Oz	955.1	19.6	49	0	1045
LS-Nikko Copper Ltd Korea (LSN)	675 bars	648,372.0 Oz	960.6	26.0	0	0	500
Matsuda Sangyo (MAT)	543 bars	524,598.1 Oz	966.1	19.3	0	0	380
Met Precieux Switzerland (ME1)	349 bars	342,329.5 Oz	980.9	38.9	1	0	307
Met-Mex Penoles Mexico (ME4)	5073 bars	5,295,429.3 Oz	1043.8	21.1	54	0	933
Min Met Penarroya Spain (MI1)	64 bars	61,229.6 Oz	956.7	50.1	0	0	63
Mitsui Mining Japan (MI3)	972 bars	931,856.8 Oz	958.7	22.0	0	0	573
Mitsubishi Materials Corporation (MI4)	5169 bars	5,017,791.4 Oz	970.7	20.6	0	0	979
Neimenggu Ref China (NEI)	261 bars	271,284.8 Oz	1039.4	19.3	74	1	217
Nippon Mining Japan (NIP)	3585 bars	3,335,484.5 Oz	930.4	12.0	51	0	595
Noranda Canada (NO1)	5508 bars	5,595,507.6 Oz	1015.9	29.3	57	0	1282
Noranda Canada (NO2)	135 bars	135,801.1 Oz	1005.9	25.8	0	0	125
Nordeutsche Germany (NO4)	17125 bars	14,799,461.1 Oz	864.2	44.9	0	0	2093
Novosibrisk Refinery Russia (NO5)	314 bars	306,537.4 Oz	976.2	20.1	0	0	257
OJSC Kolyma (OJS)	7915 bars	7,568,412.3 Oz	956.2	20.8	0	0	1063
Pamp Sa Switzerland (PAM)	1096 bars	1,101,755.1 Oz	1005.3	25.8	0	0	663
Port Pirie(Zinifex,Pasminco,Broken Hill (POR)	153 bars	144,385.7 Oz	943.7	33.5	0	0	144
Prioksky Russia (PRI)	5688 bars	5,490,261.4 Oz	965.2	22.2	50	0	1036
Rand Refinery Ltd (RAN)	144 bars	163,750.6 Oz	1137.2	37.0	0	0	140
Real del Monty Pac'a Mexico (REA)	355 bars	374,492.8 Oz	1054.9	34.7	0	0	303
Royal Canadian Mint (ROY)	26 bars	24,838.5 Oz	955.3	65.8	0	0	26
Russian State Refineries (RUS)	40727 bars	39,019,848.2 Oz	958.1	22.2	6369	9	1257
Sheffield Smelting Co UK (SH1)	423 bars	420,783.6 Oz	994.8	49.1	1	0	379
Shenzhen Zhongjin Co Ltd China (SH2)	1293 bars	1,278,650.0 Oz	988.9	7.6	1	0	305
Shui Kou Shan Mining China (SH3)	4309 bars	4,341,206.5 Oz	1007.5	28.6	214	0	1191
Shyolkovsky Russia (SH4)	661 bars	627,922.1 Oz	950.0	16.8	0	0	419
Solar Applied Materials Corp Taiwan (SOL)	22390 bars	22,219,094.3 Oz	992.4	22.6	929	0	1267
Sumitomo Corp Japan (SUM)	1938 bars	1,895,016.8 Oz	977.8	16.1	17	0	628
Sunshine (SUN)	14 bars	14,040.9 Oz	1002.9	21.4	0	0	14
Tanaka Kikinzoku Japan (TAN)	2 bars	2,136.7 Oz	1068.3	13.4	0	0	2
Toho Zinc Japan (TOH)	3062 bars	2,947,914.3 Oz	962.7	20.9	10	0	874
Tongling Nonferrous Metals China (TON)	6475 bars	6,309,998.5 Oz	974.5	22.6	1099	2	1038
Trepca Yugoslavia (TRE)	54 bars	51,101.4 Oz	946.3	30.8	0	0	53
U.S Assay Office (USA)	186 bars	196,414.8 Oz	1056.0	37.8	0	0	167
Uralelectromed Russia. YA (URA)	1287 bars	1,231,093.2 Oz	956.6	18.5	24	0	602
Valcambi Switzerland (VAL)	2052 bars	2,016,880.2 Oz	982.9	21.2	0	0	778
W Canning UK (WCA)	64 bars	69,652.7 Oz	1088.3	55.5	0	0	64
Yunnan Copper Ind' Ltd China (YUN)	11782 bars	12,038,668.0 Oz	1021.8	24.9	5392	9	1306
Zaklady Met Trzebina Poland (ZAK)	377 bars	349,030.0 Oz	925.8	27.5	1	0	314

Duplicate Serial Numbers & Weights

Refiner	Serial	Fineness	Weight	Location
ALM	937	9999	964.6	JPMV, JPMV
AS3	146230	9990	997.8	BRIU, BRIU
BRI	1107	9990	934.3	JPMV, JPMV
BRI	5394	9990	978.9	BRIU, BRIU
BRI	8021	9990	906.5	JPMV, JPMV
BRI	V2029	9990	977.3	BRIU, BRIU
BRI	W10613	9990	956.3	BRIU, BRIU
BRI	W11430	9990	1,034.0	BRIU, BRIU
INN	601598	9999	987.0	BRIU, BRIU
INN	602877	9990	992.3	BRIU, BRIC
INN	603289	9999	969.1	BRIC, JPMV
INN	603324	9990	963.9	BRIU, JPMV
INN	604680	9990	990.3	JPMV, JPMV
INN	609927	9990	980.8	BRIU, JPMV
INN	610224	9999	1,005.7	BRIU, JPMV
NEI	67	9999	1,038.1	BRIU, BRIU
RUS	13411	9999	959.9	BRIU, BRIU
RUS	1423	9998	956.2	BRIU, BRIU
RUS	1453	9999	947.8	BRIU, BRIU
RUS	1641	9999	937.8	BRIU, BRIU
RUS	2209	9999	974.5	BRIU, BRIU
RUS	22211	9998	970.5	BRIU, BRIU
RUS	2916	9999	953.4	BRIU, BRIU
RUS	5654	9999	952.6	BRIU, BRIU
RUS	M1343	9999	944.0	JPMV, JPMV
TON	2969	9999	945.7	JPMV, JPMV
TON	3404	9999	979.8	BRIU, JPMV
YUN	1441	9999	1,022.3	BRIU, BRIC
YUN	1705	9999	1,015.5	BRIU, BRIC
YUN	2015	9999	1,027.0	BRIU, BRIC
YUN	2516	9999	988.6	BRIC, BRIC
YUN	263	9999	1,036.1	BRIU, BRIU
YUN	2708	9999	1,007.7	BRIU, BRIC
YUN	375	9999	1,027.8	BRIU, JPMV
YUN	79	9999	1,025.8	BRIC, JPMV
YUN	823	9999	1,042.7	BRIC, BRIC

Bars Removed (Refinery Summary):

Refiner	# Bars	# Ounces

Bars Removed:

Refiner	Serial	Fineness	Weight	Location	First Seen

The next table shows the dates that bars were first seen, and how many ounces of silver removed were added on those dates.
For example, '19Nov10 86922' means that 86,922 of the ounces removed were bars that were first seen in SLV on November 19, 2010.

Date Ounces

Bars Added (Refinery Summary):

Refiner	# Bars	# Ounces

Bars Added:

Refiner	Serial	Fineness	Weight	Location

Date Ounces

Serial Number Changes:

Refiner	Old Serial	New Serial	Fineness	Weight	Location

Stats

# Bars:	335631
# Ounces:	326804053.2
Average Bar Weight:	973.7 ounces
Lightest bar:	516 ounces.
Heaviest bar:	1243 ounces.
Shortest Serial Length:	1
Longest Serial Length:	11
Duplicate Serial & Weight Count:	72 (about 1 in 4661 bars)
Duplicate Serial Only Count:	57766 (about 1 in 5.8 bars)
Duplicate Bars With Exact Weight:	1 in 802 duplicate bars
Total Weights:	4913
Number of Refiners:	86

General Notes

'Refiner Change' means that there was a change to the refiner of a bar (such as 'Engelhard US' to 'Engelhard UK').
'Serial Change' means that there was a change to the serial number of a bar (such as '2281' to '2008-2281').
'Stand. Dev.' is the standard deviation of the weights of the bars of a manufacturer. The lower the number, the closer the bars are in weight to each other.
LBMA Good Delivery rules prior to 2008 allowed bars weighing 500-1250 troy ounces. Currently, it is 750-1100 ounces, with 900-1050 recommended.
COMEX allows bars from 900 to 1,100 ounces (COMEX rules are not used for SLV, LBMA are).
Silver is added to or removed from SLV in amounts of slightly less than 50,000 ounces in exchange for a 'basket' of exactly 50,000 shares.

Notes on Duplicates

Duplicate Serial Numbers are acceptable per LBMA rules, if the year of manufacture is different.
'Duplicate Serial Only' means that the refiner and serial number of two or more bars match, but are different weights (almost certainly two different years, which is OK).
'Duplicate Serial & Weight' means that the refiner, serial number, and weight of two or more bars match (which is OK if the years are different).
The SLV bar lists do not have a space for the year, unless it is part of the serial number, which accounts for the seemingly duplicate entries.
The proportion of duplicate entries per warehouse does not seem unusual.
The lack of duplicate serials with some refiners, and large amounts at others, helps confirm that many refiners never duplicate serial numbers, even in different years.
The proportion of 'refiner+serial+weight' dupes to 'refiner+serial' dupes appears normal, given the distribution of weights.
With 335631 bars, occasional accounting errors are inevitable.