MAJOR CONTRACTS FOR OVERLAND CONVEYOR SYSTEMS

CSR RINKER MATERIALS CORPORATION
MIAMI, FL

IN JANUARY 1998, TRANSCONTINENTAL WAS AWARDED THE DESIGN AND SUPPLY OF THE NEW BELT CONVEYOR SYSTEM (44 UNITS) AS PART OF A MODERNIZATION PROJECT AT RINKER'S EXISTING MIAMI PLANT. A 42" WIDE OVERLAND CONVEYOR APPROXIMATELY 4100 FEET LONG DELIVERS LIMESTONE FROM THE NEW QUARRY TO THE PLANT STORAGE FACILITIES. THE 42" BW HEAD DRIVE FEATURES A 300 HP MOTOR AND MECHANICAL SOFT START. THE INTERMEDIATE STRUCTURE IS BASED ON TABLE SECTIONS WITH INCLINED TRUSS SECTIONS AND SUPPORT BENTS ON POURED FOUNDATIONS AT THE DISCHARGE END.

CEMENTOS PROGRESO - PLANTA #2
SAN MIGUEL, GUATEMALA

IN NOVEMBER 1996, TRANSCONTINENTAL WAS AWARDED THE DESIGN AND SUPPLY OF EIGHTEEN BELT CONVEYORS AS PART OF AN EXPANSION PROJECT AT AN EXISTING PLANT. WITHIN THE SYSTEM, THERE ARE TWO DOWNHILL OVERLAND CONVEYORS. A 42" BW CONVEYOR APPROXIMATELY 1500 FEET LONG TRANSFERS RAW MIX DOWNGRADE TO STORAGE SILOS. A 48" BW CONVEYOR APROXIMATELY 1300 FEET LONG TRANSFERS LIMESTONE FROM THE PRIMARY CRUSHER DISCHARGE FEEDER. BOTH CONVEYORS ARE REGENERATIVE - THE 48" BW TAIL DRIVE FEATURES A 350 HP MOTOR AND SINGLE DISC DUAL CALIPER BRAKE ASSEMBLY. THE INTERMEDIATE STRUCTURE IS BASED ON OPEN TRUSS WITH SUPPORT BENTS ON POURED FOUNDATIONS. TRANSCONTINENTAL WILL SUPPLY AN ELECTRICAL CONTROL SYSTEM TO PROVIDE CONTROLLED ACCELERATION, STEADY STATE OPERATION AND DECELERATION OF EACH DOWNHILL CONVEYOR.

PLACER DOME TECHNICAL SERVICES
PORGERA MINE
PAPUA NEW GUINEA

IN MAY 1992, TRANSCONTINENTAL WAS AWARDED THE DESIGN AND SUPPLY OF TWO 36" BW OVERLAND CONVEYORS FOR THIS LARGE GOLD MINING OPERATION. THE CONVEYORS - EACH FLIGHT WAS APPROXIMATELY 1300 FEET LONG - CONVEY WASTE MATERIAL FROM OR BACK TO THE UNDERGROUND MINE AS PART OF A BACKFILL SYSTEM. THE CONVEYORS ARE LOCATED ON VERY UNSTABLE GROUND WITH AVERAGE ANNUAL LATERAL SHIFT OF 300mm - EACH CONVEYOR FLIGHT INCORPORATES TWO HORIZONTAL CURVES. DUE TO GROUND CONDITIONS, TRANSCONTINENTAL ENGAGED BINDER + COMPANY OF GLEISDORF, AUSTRIA FOR DESIGN OF THE CONVEYOR STRUCUTRE INSTALLED OVER THE PORTIONS OF UNSTABLE GROUND. INTERMEDIATE FRAMEWORK THROUGH THE HORIZONTAL CURVE SECTIONS IS BASED ON PENDULUM STYLE IDLERS AND UNIQUE A-FRAME SUPPORTED STRUCTURE ON STEEL PONTOONS WITH SHIFTING RAILS BOTH SIDES.

THE OVERLAND SYSTEM WAS COMMISSIONED IN DECEMBER 1992 - SINCE THEN, THE CONVEYORS HAVE BEEN SUBJECTED TO TWO MAJOR LANDSLIDES THAT HAVE THE PLACED THE SYSTEM IN A SEVERE MISALIGNMENT CONDITION. THE CONVEYORS HAVE BEEN UNCOVERED, RE-ALIGNED AND PLACED INTO CONTINUOUS SERVICE ONCE MORE WITH LITTLE OR NO DAMAGE TO THE ENTIRE SYSTEM. THE CONVEYOR INSTALLATION HAS BEEN HIGHLIGHTED IN A SERIES OF TECHNICAL PAPERS THAT WERE PREPARED BY THE ENGINEERING CONSULTANT AND OUR AUSTRIAN DESIGN PARTNER. AT THIS TIME (JANUARY 1998), THE CLIENT IS MAKING PLANS TO REVISE THE COMPLETE ARRANGEMENT OF ONE CONVEYOR - TRANSCONTINENTAL WILL PROVIDE DESIGN SERVICES AS REQUIRED.


CEMENTOS APASCO - PLANTA ORIZABA
IXTACZOQUITLAN, VERACRUZ, MEXICO

IN JANUARY 1993, TRANSCONTINENTAL WAS AWARDED THE DESIGN AND SUPPLY OF FOUR BELT CONVEYORS AS PART OF A NEW LIMESTONE QUARRY DEVELOPMENT. A 60" BW CONVEYOR TRANSFERS MINUS 10" LUMPS FROM THE GYRATORY CRUSHER TO A 48" BW DOWNHILL OVERLAND CONVEYOR. THE 4600 FOOT SYSTEM IS HIGHLY REGENERATIVE - THE TAIL DRIVE FEATURES A 250 HP PONY MOTOR, 800 HP GENERATOR AND SINGLE DISC DUAL CALIPER BRAKE ASSEMBLY. THE INTERMEDIATE STRUCTURE IS BASED ON CONTINUOUS STRINGER FRAMING AND OPEN TRUSS SUPPORTED ON POURED FOUNDATIONS. THE TENSIONS DEVELOPED ON THE OVERLAND CONVEYOR DEMAND A STEEL CABLE BELT SELECTION. IN ADDITION, TRANSCONTINENTAL WILL SUPPLY AN ELECTRICAL CONTROL SYSTEM TO PROVIDE CONTROLLED ACCELERATION, STEADY STATE OPERATION AND DECELERATION OF THE CONVEYOR SYSTEM.

VICEROY GOLD CORPORATION
CASTLE MOUNTAIN JOINT VENTURE
SEARCHLIGHT, NV

IN 1991, TRANSCONTINENTAL WAS AWARDED A CONTRACT TO DESIGN AND SUPPLY A 3200 FOOT OVERLAND CONVEYOR. THE 36" BW SYSTEM HAULS CRUSHED GOLD ORE FROM THE PROCESSING MILL TO THE HEAP LEACH PADS AND WAS PLACED IN FULL OPERATION DURING THE SUMMER OF 1992. THE CONVEYOR IS SUBJECTED TO EXTREMELY HIGH AMBIENT TEMPERATURES AND SEVERE DESERT WINDS. THE INTERMEDIATE STRUCTURE IS WIRE ROPE SUPPORTED ON HEAVY ADJUSTABLE STANDS LAG BOLTED TO WOOD CROSS TIES. THE CONVEYOR IS PROVIDED WITH A SINGLE 150 HP DRIVE, HORIZONTAL GRAVITY TAKE-UP AND A HEAVY DUTY TAIL LOADING SECTION WITH IMPACT / SLIDER BEDS. THE HEAD END STRUCTURE IS ELEVATED AND INVOLVES HEAVY STRUCTURAL FRAMING IN THE DRIVE AND TAKE-UP TOWER AREAS.

PRAIRIE COAL LIMITED
POPLAR RIVER MINE
CORONACH, SASKATCHEWAN

DURING 1988, MANALTA COAL (THE PARENT COMPANY) UNDERTOOK A STUDY FOR THEIR POPLAR RIVER MINE THAT WOULD INVOLVE THE COMPANY'S FIRST OVERLAND CONVEYOR SYSTEM. TRANSCONTINENTAL ASSISTED IN THE ROUTE SELECTION AND DEVELOPMENT OF TECHNICAL SPECIFICATIONS. ONCE APPROVED, TRANSCONTINENTAL LOCATED USED CONVEYOR EQUIPMENT FOR THE HAULAGE REQUIREMENT OF APPROXIMATELY 7000 FEET. THE 42" BW OVERLAND CONVEYOR - COMPRISED OF TWO FLIGHTS - HAULS R.O.M. COAL FROM A TRUCK DUMP / FEEDER BREAKER TO A RAIL LOADOUT STATION FOR FURTHERANCE TO THE POWER PLANT. THE INTERMEDIATE STRUCTURE - A MIX OF NEW AND RECONDITIONED EQUIPMENT - WAS BASED ON WIRE ROPE SUPPORTED FLOOR MOUNTED COMPONENTS. TERMINAL EQUIPMENT CONSISTED OF 250 HP DUAL DRIVES, HYDRAULIC TAKE-UPS AND ELECTRICAL "SOFT START" MOTOR CONTROLLERS.

FUTURE MINE DEVELOPMENT MAY REQUIRE AN OVERLAND CONVEYOR SYSTEM IN EXCESS OF 9 MILES. IN ADDITION, MANALTA CONTINUES TO EVALUATE TRUCK-VERSUS-CONVEYOR HAULAGE AT THEIR OTHER COAL MINES IN WESTERN CANADA.


WESTAR MINING LIMITED - BALMER OPERATIONS
SPARWOOD, BRITISH COLUMBIA

IN 1987, TRANSCONTINENTAL SUPPLIED APPROXIMATELY 12,000 LINEAR FEET OF RECONDITIONED CONVEYOR EQUIPMENT FOR A RAW COAL HAULAGE SYSTEM. THE 42" BW OVERLAND CONVEYOR - COMPRISED OF FOUR LENGTHS OF FLIGHTS - HAULS R.O.M. COAL FROM A TRUCK DUMP TO AN EXISTING ROTARY BREAKER. THE INTERMEDIATE STRUCTURE WAS BASED ON WIRE ROPE SUPPORTED FLOOR MOUNTED EQUIPMENT. INDIVIDUAL CONVEYOR LENGTHS VARIED FROM 2000'-0" TO 5200'-0" HORIZONTAL CENTERS. TERMINAL EQUIPMENT UTILIZED DUAL 250 HP DRIVES, HYDRAULIC TAKE-UPS AND SCR BASED "SOFT START" MOTOR CONTROLLERS.

THIS MINE IS NOW OPERATED BY ELKVIEW COAL CORPORATION - A DIVISION OF TECK CORPORATION


UNITED CONTRACTORS LIMITED
NEW WESTMINSTER, BRITISH COLUMBIA

IN 1984, TRANSCONTINENTAL SUPPLIED APPROXIMATELY 2-1/2 MILES OF USED CONVEYOR EQUIPMENT FOR A HIGHWAY PRE-LOAD CONTRACT. THE 42" BW OVERLAND SYSTEM INVOLVED TWO 5000'-0" CONVEYORS AND A 1500'-0" - EACH POWERED BY MULTIPLES OF 250 HP (TOTAL OF 1250 INSTALLED HP). THE SYSTEM CONVEYED OVER TWO MILLION YARDS OF DREDGED RIVER SAND THROUGH A PEAT BOG TO THE HIGHWAY 91 RIGHT-OF-WAY. INTERMEDIATE STRUCUTRE WAS BASED ON WIRE ROPE SUPPORTED FLOOR MOUNTED EQUIPMENT WITH ADJUSTABLE SUPPORT STANDS LAG BOLTED TO WOOD CROSS TIES. TWO LARGE FRONT END LOADERS DELIVERED WET SAND TO A HEAVY DUTY BELT FEEDER LOCATED OVER THE TAIL SECTION OF THE FIRT OVERLAND CONVEYOR. A BELT TRIPPER WAS INSTALLED OVER THE TWO 5000'-0" SECTIONS WHICH ALLOWED MATERIAL TO BE DISCHARGED TO 50'-0" STACKERS ON THE RIGHT-OF-WAY (FOR PRE-LOADING) OR THROUGH THE ENTIRE SYSTEM TO A STOCKPILE.

UPON COMPLETION OF THE PROJECT, THE CONVEYOR SYSTEM WAS DISMANTLTED, RECONDITIONED AND SOLT TO A MAJOR MINING COMPANY IN WESTERN CANADA WHERE IT CONTINUES TO PROVIDE CONTINUOUS HAULAGE OF RUN-OF-MINE COAL.


MAJOR CONTRACTS
FOR
BELT CONVEYORS
IN
CEMENT PLANTS / QUARRIES

HOLNAM - DUNDEE, MICHIGAN
4 BELT CONVEYORS
HOLNAM - HOLLY HILL, SOUTH CAROLINA
22 BELT CONVEYORS
ST. LAWRENCE CEMENT - CAMDEN, NEW JERSEY
3 BELT CONVEYORS
HOLNAM - MORGAN, UTAH
8 BELT CONVEYORS (PLUS MODIFICATIONS)
JUAN MINETTI - ARGENTINA
11 BELT CONVEYORS
HOLNAM - MORGAN, UTAH
16 BELT CONVEYORS
I.N.C.S.A. - COSTA RICA
5 BELT CONVEYORS
CEMENTOS APASCO - ORIZABA, MEXICO
OVERLAND CONVEYOR
CEMENTOS APASCO - RAMOS ARIZPE, MEXICO
4 PLANT CONVEYORS
CEMENTOS APASCO - COLIMA, MEXICO
3 BELT FEEDERS
CEMENTOS VERACRUZ - ORIZABA, MEXICO
12 PLANT CONVEYORS
LAFARGE CEMENT - ALPENA, MICHIGAN
18 PLANT CONVEYORS

CEMENTOS PROGRESO - GUATEMALA
2 BELT CONVEYORS
I.N.C.S.A. - COSTA RICA
4 BELT CONVEYORS
CEMENTOS PROGRESO - GUATEMALA
11 BELT CONVEYORS
HOLNAM - FLORENCE, COLORADO
24 BELT CONVEYORS/FEEDERS
CSR RINKER MATERIALS - MIAMI, FLORIDA
24 BELT CONVEYORS/FEEDERS, 2 BELT TRIPPERS
CEMENTOS PROGRESO - GUATEMALA
14 BELT CONVEYORS
CEMENTOS BOYACA - COLOMBIA
15 BELT CONVEYORS
LAFARGE CANADA - RICHMOND, BRITISH COLUMBIA
4 BELT CONVEYORS (INCLUDING 2 POCKET BELTS)
CEMENTOS APASCO - ORIZABA, MEXICO
FEED & DISCHARGE CONVEYORS / OVERLAND
CEMENTOS APASCO - TECOMAN PLANT - MEXICO
8 PLANT CONVEYORS
CEMENTOS POLPAICO - CHILE
8 PLANT CONVEYORS
LA CEMENTO NACIONAL - GUAYAQUIL, ECUADOR
25 PLANT CONVEYORS & ONE TRIPPER