CO129-553-8 Tin- analyses of assay 11-3-1935 - 4-3-1936 — Page 8

CO129 Colonial Office Hong Kong Records 理藩院香港檔案 All

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method was adopted's

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1427 on advin of the London Detal Gallmys? London Co. of Commerc,

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"I thought he saidh 181

Messrs.Glen Allen, to whom reference is made in

Nos. 3 and 8, but occasionally, the services of the

Government Analyst were sought by firms, and in such

cases analyses were carried out and certificates

supplied with the Government's authority on payment

of a suitable fee. Only, therefore, with the Government

Analyst's assays need the Government of Hong Kong

be concerned.

Mr.Branson explained that in cases where

the Government Analyst was employed, he had no know-

ledge of the tin until the moment he went to the

Refiner's or Merchant's go-down to take samples. He

would there find a stack of tin slabs and of these

10% plus 1 are taken from a pile at random, Samples

are taken from each of these slabs in the manner

explained in the last enclosure in No.9. When the

drillings are taken away for analysis in the Govern-

ment laboratory, the slabs concerned are stamped

as up to standard and there is an understanding that

these slabs shall not be moved until the results of

the analysis are reported and a certificate supplied

from the Government Analyst's office. In cases where

the analysis shows the tin content to be below 99%,

slabs have to be re-mi

-med. In other cases where

the certificates can be given, the Government at that

point loses all further touch with, or responsibility

for, the slabs. They supply normally eight copies

of the certificate, and the certificate is to the

effect that the average tin content of the stack

(from which the 10% plus 1 have been taken at random

for analysis) is not less than 99% as based on an

analysis of 10% plus 1 of the slabs.

The stack and the certificates are then

entirely in the hands of the exporter who often

splits up the stack for export in different consignments

and

Page

Page

10% +1.

and he has eight copies of the certificate for

use with the various consignments. This system

would clearly present opportunities of substi-

tution or other forms of dishonesty on the

exporter's part, and Mr. Branson stressed also

the fact that only a relatively small number

of the slabs in the stock were, in fact,

analysed, and owing to the rather crude (though

on the whole astonishingly efficient) refining

methods of the small Chinese firms, it was not

impossible that in a certified stack there would

be individual slabs which would have a tin con-

tent slightly less than 99%. It was therefore

possible, though it must be rare, for a split

consignment out of the stack to be composed

of sub-standard slabs and, admittedly, an

importer must be aware that he is taking a risk

on accepting the Hong Kong Government's analysis

of the average if he relies on a split consign-

ment conforming precisely with the average figure

or, at any rate, not falling below it.

Mr.Branson said that he would be very will-

ing and indeed would like to discuss the com-

plaints which have been made, with the London

Metal Exchange, or with importing or Refining

houses in this country, and we are inclined to

suggest that we should now write to the London

Metal Exchange (See No.1 on 33863/34) and Messrs.

Strauss & Co. (See No.2 in this file), first of

to both

all explaining, that the Government cannot accept

responsibility for the analyses made by Messrs.

Glen Allen, or any other private Analysts in

Hong Kong, and going on to tell the London Metal

Exchange what the Governor says in No.9 and men-

tioning that Mr.Branson is on leave and will be

happy

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