Wednesday, May 25, 2016

Mamut Copper Mine - A day at the pit.

<3 Assalamualaikum <3

Selamat hari rabu...

Oke hari ni kita sambung sejarah Lombong Tembaga Mamut a.k.a Mamut Copper Mine.

Masa MCM tu masih di ambang kegemilangan, Ennor dan kawan-kawan pernah kerja di sana selepas habis SPM tahun 1997. Pihak kompeni mengambil anak-anak pekerja sebagai pekerja sambilan di sana.Atas dasar kesedaran kepada komuniti. Iya la daripada melepak tidak tentu pasal kan? LEbih bagus pi kerja sambil menimba ilmu dan juga mendedahkan kami kepada dunia pekerjaan. Ramai juga di kalangan kami yang mengambil kesempatan dalam kelonggaran tu.
Gaji sehari tidaklah seberapa bolehlah untuk belanja harian.

Disana kami di benarkan bekerja sambilan dalam pelbagai deparment terutama mechanical / machinery dan juga environment. Ennor dan kawan-kawan yang perempuan kebanyakannya ditugaskan di Environmet Department. Ada yang dihantar ke bahagian penanaman bunga / sayur tapi Ennor dan beberapa rakan baik ennor yang juga rakan dari kecil bekerja di bahagian penghijauan kawasan. Which mean (aishehmen cakap english konon) kami ditugaskan untuk membenihkan rumput di dump site. Tanah yang dikorek dari lombong akan di timbunkan ke kawasan lain dan jadi kerja kami menyemai benih rumput di sana.

Oke sebenarnya Ennor bukan nak cerita pasal ini. Nanti Ennor akan bercerita panjang tentang proses penghijauan semula kawasan sekitar lombong.

Di sini Ennor mau kongsi pengalaman salah seorang pekerja di lombong ni 'sehari di tapak lombong' (A Day at the pit)  


Written by : K.H wong
Mining Engineer,
Mining Section.

(original from Mamut News Bulletin. Bil 1 Disember 1982)

The sky is still in complete darkness, but at 5.15am the staff and personnel of Mining Section are heading for the Mamut pit.
On arrival, the officers will receive report from the night shift asst. foremen and group leaders so as to instruct the day shift workers of their daily job assignments. Mining Section has some two hundred (200) employees out of which are 9 supervisors, 15 group-leaders, 61 dump-truck drivers, 16 loader operators, 32 bulldozer operators and 24 in the blasting and drilling group.
The pit operation consists of four (4) groups: drilling and blasting, loading and hauling, Instruction and road maintenance. As in all operational and production works, a "Target" is to be acquired. The pit operation has its daily target, and the Mining Personnel strive to achieve the target.
At 6.00am, the drilling crew is assigned to operate the four (4) drilling machines (DM4), and the PCR200 crawler drill at various levels in the pit. A DM4 drilling machine gives of 7 1/2 inches (190mm) which is used for the main blast. the crawler yields a 3-inch (76mm) hole used for secondary blasting. The drilling crew usually spends the first hour of the day inspecting and servicing the drilling bits (drilling head) will be inspected by the foreman to decide whether the bits should be changed or redressed so as to increase their life span. Hence, it is important to have a person responsible for redressing the bits, which are made of tungsten carbide. Generally, drilling starts at 7.00am each day. The drilling machines can conduct angle from 60 degrees to 90 degrees (vertical drilling), as required by the officer in-charge of the drilling an blasting operations. The holes are marked with angle and direction at 7m spacing and 7m toe burden. Each bench of the pit is about 12m high. 
The officer in-charge after checking the depth and positions of the holes will decide the amount of ANFO (Ammonium Nitrate and Fuel Oil) explosives required per hole, taking into consideration the hardness of the rock and the insitu geological condition.
 Delay detonator is used to improve the effect of blasting time is between 11.30am to 12.30pm. 
Safety measures are taken during the blasting hour where all heavy machinaries have to move out of the pit or to safe are under officers supervision.
Sirens are also sounded to signal the readiness for blasting. Two additional sirens will be sounded again when all the main blasts are completed.
After blasting, Geological Section's personnel will identify the fragmented rocks as copper ore or waste. The rocks will be scheduled for loading and hauling; copper ore to the primary crusher and waste to the dumping area. Thus, the loading and hauling group plays an important role in this aspect.
As the planning for the haulage of ore and waste is 410,000m³/month or 1,107,000t/month (where the budget for the average copper grade is 0.57%), an adequate number of loaders and dump-trucks are required. For this reason the efficiency and availability of these heavy machineries is vital for pit operations. The officer in-charge of loading and hauling group will allocate the combination of loaders, dump-trucks and bulldozers at the start of each shift. 
The instruction group will look into safety measures of the pit. Signboards and posts are erected to "inform" drivers and operators of the road conditions. Proper driving skills by operators and divers are inspected to ensure safety.
The road maintenance group will maintain road conditions, the drainage system at the mine site, and changing of tyres for the heavy equipment. The road conditions is vital for the safety of the drivers and operators, and for the smooth operations of the section. The drainage is important to ensure the stability of the pit slope.
All in all, the four groups work in unison for smooth pit operations. Without the co-operations from a group the production schedule will be affected.
At 6.00pm, the day shift will be completed to be followed by the night shift. The work is continuous to ensure the supply of copper ore to the Milling.
 
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Oke Itu saja nanti Ennor post lagi entri tentang MCM untuk pengetahuan kita semua...
 
Wassalam
 
Pesan EpZ : Maaf tak ada gambar. Nanti Ennor upload untuk tajuk lain la pula. Oke? 

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