ADVANCES IN MINING, CAPITAL CONSTRUCTION, AND PRODUCTION OF ELECTRICAL EQUIPMENT IN CHINA

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000700200017-9
• Release Decision: RIPPUB
• Original Classification: U
• Document Page Count: 4
• Document Creation Date: December 22, 2016
• Document Release Date: August 31, 2011
• Sequence Number: 17
• Publication Date: August 25, 1954
• Content Type: REPORT

Sanitized Copy Approved for Release 2011/08/31: CIA-RDP80-00809A000700200017-9
STAT
Sanitized Copy Approved for Release 2011/08/31: CIA-RDP80-00809A000700200017-9
 Sanitized Copy Approved for Release 2011/08/31: CIA-RDP80-00809A000700200017-9
STAT
ADVANCES IN MINING CAPITAL CONSTRUCTION AND PRODUCTION
OF ELECTRICAL EQLIIPMENT IN CHINA
T'uik_s1en-chin ti She* ch an Ching yen
(Dissemination of Experiences in Progressive Production)
Peiping, 1952
[Comment: This report summarizes information on methods of mining,
of capital construction, and of the production of electrical equipment
found in the above-named book, published by the Ministry of Fuel Indus-
try, Central People's Government. The book was compiled from newspaper
articles, speeches, and documents published by various government or-
gans of the People's Republic of China.)
1. Hsi-an Mining Administrative Bureau
The Department of Industries, Northeast People's Government, has an-
nounced that the Hsi-an Mining Administrative Bureau was able to speed up the
construction of vertical mine :ts from 7 meters a month to 51 meters a
month. This enables the entir, mine building program, including installation
of equipment, to be completed within 5 years instead of the 10 years originally
planned. Costs for building the mine shafts fell from 32 million yuan to 19
million yuan'per meter. Time is saved in the construction of the shafts by
lowering a platform into the shaft on which workmen can stand to build the
shaft's casing while the shaft is being dug beneath them.
2. Chi-hsi Mining Administrative Bureau
The Tsui Kuo-shan p-Did Digging Section of the Chi-hsi Mining Ad-
ministrative Bureau, by Marc -j52, had attained a rate of progress in the
tainediggingao40f
saving in over
ex40 plosive meters
chaa day. rges 67-man section ing in-
primers. The average rate of advance of this section's Sdigogers is a0.4 in
met
per day. The unit's efficiency is due for the most part better labor dis-
tribution and a new system of digging. Now level passageways, ettir lined pas-
ways, and drifts are dug iecificd
ug simultaneously, and workers areivens Psrage-
ments instead of being permitted to dig as they g
aesign-
y pleased in any passagc assag?way.
3. Fu-hsin Coal Mine, Northeast Department of Industries
The Ma Wen-chih -vploratory drilling section of the Fu-hsin Coal Mine,
Northeast Department of Industries, has developed a new "rapid. drilling method."
With this system, an average of 8.34 meters per day was drilled, and the record
for a single day was 21 meters. The 8.34 meters per day is three times the nor-
mal rate of advance. Among the most important improvements made by the section
are: (1) the old 75-millimeter drill with its eight oblique hard steel points
has been replaced by two parallel rows of 16 points; (2) the maximum drilling
speed was increased from 120 rpm to 248 rpm, the speed varying according to
the type of strata being drilled; and (4) time allotted for the maintenance oandarepairrofuequipmentewascshortened.
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4. North China Coal Mines
The Ta-t'ung, Chiao-tso, Ching-hsi, Yang-ch'iian, and Fen;;-feng state-
operated coal mines in North China are using the Me Liu-hai rapid excavating
method. The method was first announced by the Ministry of Fuel and Industry in
January 1952.
The depth of the hole for the charge was increased from 1.1 meters to
1.7 meters, raising the efficiency of the blast and the mining equipment. In
digging a passageway 3 meters wide and 1.5 meters high, the Ta-t'ung Mine was
able to advance 351 meters in 80 working days. Workers of the Ching-hsi Mine
guaranteed a daily rate of advance of 15 meters; however, the loading equipment
could not maintain this rate. The Feng-feng Mine was hampered by poor supply
coordination, causing periodic work stoppages.
5. No 1 Copper Mine, Northeast Nonferrous Metals Administrative Bureau
The No 1 Copper Mine under the Northeast Nonferrous Metals Administra-
tive Bureau is using a new "wet-type rock drilling method" that protects tiorkersfYom
dust containing silicon dioxide and speeds drilling operations. The mine for-
merly employed two men to operate each drill, but now needs only one man to watch
two drills. The efficiency of the drills has increased 25 percent.
1. The Northeast Department of Industries Construction Planning Company
Through the application of Soviet building methods, the Northeast De-
partment of Industries Construction Planning Company saves 1.5-2 tons of rein-
forcing steel and 14 cubic meters of concrete per 1,000 square meters of con-
struction work. The company has so far completed plans for nine projects and
has saved over 300 cubic meters of concrete and 30 tons of steel reinforcements.
The company saved an estimated 700 million yuan when it revised it, plans ac-
cording to Soviet specifications for four projects it had drawn up in 1951 and
on which construction had not yet begun.
Originally, 1.3 million yuan per square meter was allotted to the Non-
ferrous Metals Control Bureau's Industrial College construction project, but
under the new construction standards the cost dropped to 1.1 million yuan per
square meter.
The Light Industries Control Bureau's expenditures on 15 projects
dropped 10-13 percent with the new methods, seeing enough money to construct
3,233 square meters of living space for 770 single workers or 4,157 square meters
of living space for 130 workers with families, each home housing three ,.ersons.
2. 21st Engineering Company
Tlie 21st Engineering Company of the Northeast announced a new "vacuum
method" for peurir
g concrete which
e
.St
d
_
p
r
s woo
en forms to be dismantled 40
minutes after the pouring and saves 15-20 percent in concrete. On work loca-
tion No 366, the new method reduced drying time by 75 percent and also reduced
the number of wooden forms required by 87 percent. This method increases the
concrete's density and its resistance to cold, friction, and decay.
2 -
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3? Harbin Engineering Company, Northeast Department of Industries
The Harbin Engineering Company, Northeast Department of Industries has
adopted the Soviet "Sha-fu-liu-chin [possibly Zavalishin] two-handed method for
applying mortar." Combining the new system with an improved mortar-spreading
implement, one man can lay 6,000 bricks during one 9-hour shift, compared to the
previous average of only 1,700 bricks it nn 8-hour shift. The speed is attained
through the utilization of unskilled labor or apprentices to operate the mortar
implement and to keep the bricklayer supplied with a steady flow of bricks.
C. Electrical Equipment
Northeast Electrical Plant No 5
Through greater specialization and improved distribution of worker skills,}
the Northeast Electrical Plant No 5 was able to increase its production of electric
motors from 200 a month to 1,200 a month. Whereas formerly, highly trained tech-
nicians were required to perform many skilled operations, workers now have very
specialized jobs. In addition, they have been assigned according to their
capabilities, and not arbitrarily as in the past.
STAT
Sanitized Copy Approved for Release 2011/08/31: CIA-RDP80-00809A000700200017-9