MEMBER 530

The Mining and Quarrying Industries throughout Australia is dependent on high quality high maintenance equipment, fixed and mobile plant. All equipment relies on a routine maintenance schedule that is intensive on labour and high in cost to the company. TACA has a product that in high wear areas has shown to outlast all other types of hard facing on the market today. Coating items like Ripper Boots, Bucket Teeth and adaptors Moils, Cutting Edges, Wear plates, Crusher Plates etc, you are guaranteed that you will extend the life of these items from anywhere up and sometimes over 5 to 10 times the life you are experiencing now. TACA is already saving its clients significant dollars in maintenance costs, as shown in a cost/benefit analysis undertaken for a Victorian quarry which revealed savings of up to $100,000 over 2 years on the operations of a single crusher. In multi-site operations this would mean annual savings running into millions of dollars.

The technical quality of the unique TACA process has been confirmed by one of our clients, Age Mining, who carried out tests on our product in collaboration with the University of New South Wales in the minefields of Western Australia. The tests showed that picks coated with TACA withstood loads of up to 370 kN (37 tons) per square inch before showing signs of stress while picks not coated with TACA began to break down at just 110 kN.

Right 30 ton Excavator Bucket outside teeth are coated inside teeth are not coated, note wear of uncoated teeth at 40 hours Left trial picks for West-ern Australian. Coated area tested to 78 Rockwell

Distribution Plate from a Conica 125 Crusher This replaced the original crusher plate with a 10mm mild steel plate with the TACA process applied. These plates can be removed, repaired and re used instead of the full replacement at each shutdown. Using this plate has extended the production run from an average of 10.5 days to 60.8 days between shutdowns to replace the plates at a cost saving of $45,750 over the 12 month period (Refer to Cost Analysis next page)

Both of these Black Cat excavator teeth have done 20 hours work, note the length of the coated tooth on the left and the length of the uncoated tooth on the right. The left tooth 338mm, the right 287mm with a difference in length of 51mm

Mittagong Sands NSW

GET Ripper Boot used on a 375 Komatsu Dozer Trial boot after 25 hours in service, note comparison to top boot With only 4 hours of service uncoated. The coated boot has only worn 42mm off the tip Cost saving 3 boots at $350.00 each. This boot was rebuilt 3 times before being scrapped cost saving was equal to 9 boots Earth Civil Buxton Quarry NSW

photos from Holcim Quarries Note: These cutting edges are Tri Blaze 42 RC through steel and have done 200 identical hours with different operators in very abrasive quartz rock. The average Tri Blaze wear plate At $3500.00 plus GST lasts 800 hours (without TACA) this being a reversed bevelled cutting edge

The photos above show the Cutting edges that are coated with TACA The photo Below is Uncoated without TACA

Note the wear of the uncoated Cutting Edge

Note Minimal Wear of the coated Cutting edge

COST/BENEFIT ANALYSIS - 2007 BASED ON EVANS QUARRIES – PHILLIP ISLAND

(For further details contact quarry manager, Kevin Donohue – 03) 5956-8445)

CRUSHER STAR PLATE REPLACEMENT COSTS PER YEAR WITHOUT TACA YEAR 1 REPLACE PLATE 35 TIMES @$700 EACH = $24,500 2. REPLACEMENT TIME 2 HOURS X 35 X 3 WORKERS @$20 = $4,200 LOST PROFIT FROM LOST PRODUCTON 2 HRS X 35 X 120 TONNES @ $4 PROFIT PER TONNE = $33,600 TOTAL COST $62,300 (LOST CASHFLOW 2 X 35 X 120 X $9.50 = $79,800) YEAR 2 SAME AS YEAR 1 $62,300 (LOST CASHFLOW 2 X 35 X 120 X $9.50 = $79,800) TOTAL COSTS FOR 2 YEARS $124,600 (LOST CASHFLOW for 2 years = $159,600) WITH TACA YEAR 1 1. TACA INITIAL 2 PLATES @$3,000 = $6,000 2. RE-TACA ORIGINAL PLATE 6 TIMES @ $500 $3.000 3. REPLACEMENT TIME 2 HOURS X 7 X 3 X $20 = $840 LOST PROFIT FROM LOST PRODUCTION 2 HRS X 7 TIMES X 120 TONNES @ $4 PROFIT P/TONNE = $6,720 TOTAL COST $16,560 (LOST CASHFLOW 2 X 7 X 120 X $9.50 = $15,960)

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YEAR 2 1. RE-TACA ORIGINAL PLATE 7 TIMES @ $500 $3.500 2. REPLACEMENT TIME 2 HOURS X 7 X 3 X $20 = $840 LOST PROFIT FROM LOST PRODUCTION 2 HRS X 7 TIMES X 120 TONNES @ $4 PROFIT P/TONNE = $6,720 TOTAL COST $11,060 (LOST CASHFLOW 2 X 7 X 120 X $9.50 = $15,960) TOTAL COSTS FOR 2 YEARS $27,620 (LOST CASHFLOW for 2 years = $31,920) - 2 - YEAR 1 TOTAL COST BENEFIT WITH TACA $45,740 YEAR 2 TOTAL COST BENEFIT WITH TACA $51,240 TOTAL SAVING $96,980 ==================== YEAR 1 ADDITIONAL PRODUCTION CASHFLOW $63,840 YEAR 2 ADDITIONAL PRODUCTION CASHFLOW $63,840 TOTAL ADDITIONAL CASHFLOW $127,680 ===================================== NOTES:- These figures are based on a single rock crusher. The raw material is columnar basalt. The original plates are made of mild steel supplied by TACA and coated with the TACA process. When worn, they are not replaced but are repaired and re-coated where necessary. Initially two plates are provided so that they can be changed over with a minimum of interruption to production

Kevin Donohue - Evans Quarries "Whithout TACA the $700 wear-plate in our rock crusher would have to be replaced every week, taking the machine out of service for hours at a time with the resultant effect on produc-tion. With the TACA hard-facing process our wear-plate only needs to be replaced every 7 weeks and the plate itself can be re-surfaced with TACA up to 10 times, again with the result-ing cost saving benefits. We estimate that by using TACA we have saved at least $100,000 in maintainence costs over the past 2 years."

Photo attached of Kumbee Crusher cheeks plates, these plates in our conditions in Victoria last approximately 2 weeks, running 24 hours a day 7 days a week. With TACA applied to date 10 months and still going.

Moil from a 30 excavator, these can be repaired, built up and coated with the process to protect the chisel end, prolong its working life, reduce downtime, increase profits and is cost effec-tive

The process has been successful on Loader Cutting Edges outlasting other types of hard facing available. With the process applied these edges on the left from a Kawasaki Loader and a 988 Caterpillar operated by Dunmore Sands NSW, lasted 12 months doubling the life of the uncoated edges.

Left, New and Used Teeth from Hanson Quarry Canberra Middle, Coating on the new Esco Super V teeth for Hanson Canberra Quarry Right, Coating on Adaptors and Teeth prolong the life , reduces the coats of replacement, downtime and in turn increases the profitability of the Quarry, mine or business.

TACA is currently under- going trials with BHP Billiton and other companies in the North West of Western Australia using our process on “Picks” for surface mining equipment of Iron Ore deposits. These trials are proving that the TACA process is durable and long lasting as it withstands impact (up to 370kn) and is outlasting the opposition in wear resistance. The Trials have been conducted in conjunction with Age Mining Services Pty Ltd Newcastle and the University of Sydney in NSW. Tungsten Grit In Weld

Trial Picks for BHP Billiton WA Cross Sectional View of Weld Area The cross sectional cut shows and even dispersal of grit throughout the weld material giving an even hardness that will support and prolong the the life of the Tungsten Tile. The process can be used on other picks used for Road construction , Trenching machines, continuous miners, Longwall mining systems to name a few.

The beauty of the TACA process is that due to the leaching in the weld metal of a percentage of the tungsten the matrix of the weld becomes a high wear and impact resistant. This alone is the reason that this process will outlast all other forms of Hard Facing on the market today. One of the main problems of other forms of Hard facing (rods and Wire applications) is that they in time become brittle, work harden, wear and can break off. Another positive in using the TACA process is when rebuilding a coated area, minimal preparation is required as the process can be applied directly over and existing layer of the coating. Normal hard facing systems require the old coating to be removed before a new coating can be applied, this can become a labour intensive and a costly exercise.

These pictures show a Directional Drill Head from Easy Dig Pty Ltd of Maraylya NSW. To date 4/07/09 this head is over 2.5 years old This has been re built and recoated twice. This head uncoated over the same period would be rebuilt and coated over 10 times with a stallite coating and would last only a short time. These uncoated heads would last a maximum of 12 months before being scraped. Cost savings in maintenance and downtime are high, increased productivity with increased profits.

These Ripper Boots from Earth Civil (Picton NSW)

Buxton Quarry show the difference in wear of a coated boot to un-coated. They were both built up to increase the length by 30 and 40 mm before being recoated on the exposed area. The 4 hour old boot was built up and coated with the TACA process to achieve maximum cost effectiveness. The 25 hour boot, previously coated, had the length in-crease to original length and recoated which was again rebuilt up twice more before being scrapped.

Length increased by rebuilding the tip, As shown, and coated with the TACA process increasing the useable life less down time, higher profits At TACA Southern Regional NSW we

pride ourselves with great Workmanship, Value for money and we believe in our Product. We work with our Customers to ensure you get want you want. Our work ethics ensure you get a Quality Product to your requirements. If you have a specific problem we can work together to solve and rectify it.

Above and Below Tynes after being rebuilt up and recoated with the TACA process

Left Conica 125 Crusher Plate Right Tynes for a Cat 14G Grader

Above Ripper Boot Trials Buxton

Quarry 375 Komatsu with GET Ripper Boot

Left Cat Ripper Boots for De-partment of Lands NSW

Above Heal Wear Plates for a Komatsu 480

Loader

RESULTS OF YANDI TESTS ON 4 TACA PICKS

MAY 2008

Conducted by Thomas Lynch, Project Manager HWE Mining, at the Yandi iron ore project in the Pilbara, Western Australia

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Four TACA coated picks were trialled on a Vermeer Surface Miner as part of a full lacing, with the other picks not treated with TACA. The following results, whilst inconclusive, clearly show that the TACA coated pick that remained operational out-performed the non-coated picks by at least a factor of 5. RESULTS:

After approximately 16 hours of operation, picks 1, 2 and 3 stopped rotating (froze) in their shank holders due to dirt ingressing into the space between the pick and the gusset and then working its way down the shank between the pick shaft and the holder. As a result the failure to rotate caused uneven shoulder wear and heat build up, and allowed the tungsten tile to fracture. The picks were located as follows:-

Pick 1 was on the LH drum one in from the double gusset Pick 2 was on the LH drum gusset adjacent to the chain Pick 3 was on the RH drum one row in from the outside gusset Combined, the 3 picks moved 4,964 bcm. The 4

th pick, located on the RH drum outside the double gusset, continued to oper-

ate for a further 3 and a half days and moved 19,819 bcm. At the end of the trial it it could be seen that the pick had rotated forward and reverse but showed little sign of wear. 12/03/09

To:- Barry McCartney TACA Southern Regional NSW Workshop Address: Unit 26 / 32 Browns Road South Nowra NSW 2541

Barry, Just a short note to thank you for the excellent work modifying the Drill Head for our small Horizontal Directional Drill, please feel free to pass on this note and our recommendation, to any potential customers. The original drill head we used was a Standard design steerable Rock head which failed to penetrate Hard Coffee Rock. It appeared that the Rock was absorbing most of the hammer energy, and we approached you to rebuild the head to rough design outlines we had in mind. You took our concept and improved and evolved it in stages during a number of exchanges, which involved our input at every step. The final result which we have nick named the “Little Ripper” is very a very Robust Drill Head that combines sharp tungsten Buttons (sharper than we might have used without your input), very rough and aggressive Tungsten ridges and general Tungsten over coating, and is a well balanced, efficient design. The results we achieved drilling the same area of Coffee Rock with the same Drill set up and the Little Ripper in place, were excellent. In Rock where we had achieved pretty much a zero production rate we now achieved rates of up to 3m/hr over short periods, averaging out at about 2.5m/hr continuously. Our usage is not high, but so far, after more than a year in service, there is no discernable wear to the TACA process on the head. We are not aware of any other system that matches your process and this, along with your innovation and support, is a winning combination. At the end of the day, the process not only exceeded our expectations, but was not expensive. We are presently in the process of working with you to modify and improve

returned to you with the expectation of getting and innovative solution at value for money. We appreciate your service, Best regards, Martin Valender (OmniDrill)

Bill Boersma - Aussie Drains "Our company recently constructed the new drainage system the entire length of the world renowned Flemmington Racecourse, home of the Melbourne Cup. Before using TACA we had to hard-face our cutters once a day, but thanks to TACA we now don't need to re hard-face them at all with some jobs. I would estimate that the cutters last up to 15 times longer than before."

Kevin Donohue - Evans Quarries "Whithout TACA the $700 wear-plate in our rock crusher would have to be replaced every week, taking the machine out of service for hours at a time with the resultant effect on production. With the TACA hard-facing process our wear-plate only needs to be replaced every 7 weeks and the plate itself can be re-surfaced with TACA up to 10 times, again with the resulting cost saving benefits. We estimate that by using TACA we have saved at least $100,000 in maintainence costs over the past 2 years."