"[narrator] A new breed of super machines is evolving." "Bigger, faster, smarter, built to tackle near impossible feats." "Among them: the world's largest Mega" "Truck." "Wow!" "Herewe go !" "[narrator] A fleet of these super intelligent machines battle hostile conditions in America's highest production goldmine." "They'rea two-storyhouse driving around on wheels." "[narrator] Hauling 300,000 tons of rock a day to uncover a fortune in gold." "Bringingonthatgold." "Mmm, bling, bling!" "[narrator] We'll blow this 5.5-million-dollar beast apart to discover technological secrets that overcome the impossible." "An engine with the power of a freight train." "(grinding metal)" "Super-grip tires as tall as two men..." "And survival systems for the toughest climates." "We'll reveal how this extraordinary Mega Truck evolved to rise above all other machines." "[narrator] In Nevada's high desert plains sits Cortez Hills" "Mine, producer of more gold a year than anywhere else in" "America." "(buzz of machines)" "It's one of the most extreme working environments on the planet, with temperatures climbing upwards of 110 degrees." "In 2012, workers blasted...." "Andwearereadytofire." "(explosion) [narrator]:...dug... and ground down..." "Everything'slookinggood, let's keep going!" "[narrator]...120 million tons of rock to extract 2.3 billion dollars worth of gold." "That's the weight of three buses!" "At the heart of the operation, an elite crew of extreme truckers." "Alright,let'sgetstarted!" "[narrator] Calling the shots," "Pit Supervisor Dan Bunner." "Today'sprobablynotgoingto be like any other day." "We're going to haul off the top of the mountain." "We're going to have heat and I would imagine wind later on." "If we get in a dusty situation, make sure we shut ¢em down." "[narrator] Over the next five days, and in soaring temperatures, Dan needs his truck crew to haul 180,000 tons of rock and hit a target of" "40 million dollars of gold." "OK,that'sit ,haveagood  day." "Be safe." "[narrator] For ordinary trucks, this goal on this deadline, under these conditions would be mission impossible." "So the mine will fire up 260 tons of metal muscle..." "The Liebherr T284: 26 feet tall, this 5.5-million-dollar colossus is a new super breed of haul truck, the largest on the planet." "(grinding metal)" "Built from 50,000 thousand components." "(grinding metal)" "This flagship of the Cortez" "Hills fleet is at the pinnacle of truck design." "Her 4,000-horsepower engine has the pull of a freight train." "At full capacity... her 3-megawatt generator could light up a whole town." "On her back, the dump bed can carry up to 400 tons, the weight of a Jumbo Jet." "This Mega Truck was built for just one purpose: hauling more rock than any other machine." "Taming 30 of these beasts will take the mine's most seasoned truckers." "Alright,let'sgo !" "Gottadoa  walk-around, first thing." "[narrator] Meet one of the best:" "Ibasicallyhavetotrust this truck with my life and the fact that everything's working, to take care of me." "In this area here, I'm looking for any kind of hydraulic leaks, oil leaks." "These tires can take a lot of beating but they're potentially an explosion waiting to happen." "If you're too close when one of these things goes, you're done." "[narrator] As the clock starts on the crew's 40-million-dollar mission, Alice needs all the help she can get." "Ladder'sup." "Justabout everything on this truck is computerized." "(beeping)" "I feel like I've always got a babysitter." "She's my girl." "I'm more of her puppet though!" "(honking)" "And we are off and running." "We are off to the top of the world." "(beeping)" "Yeehaw!" "[narrator] The fleet of Mega" "Trucks haul rock from giant excavators, clawing their way down through the mountain to reach gold ore buried deep below." "But until they get to it, the truck crew must haul thousands of tons of waste rock out of the way." "Allwe'redoingisbasically eating the mountain up." "[narrator] Alice's first challenge:" "Climb 1,000 feet to the mine's highest excavator." "Navigating busy roads from her cab 20 feet in the air is treacherous." "Visibilityinthesetrucks is next to nil." "You're in a 2-story house on wheels." "This time of the morning we've got all kinds of small vehicles, small pickups, floating around or flying all over the place." "It does make me very nervous, because I can't see them at all on that side." "They could be right next to me and I wouldn't know it." "Ifa truckrunsovera pickup, chances are nobody survives in it." "02 to 289, Alice." "Goahead." "Whenit'scleartopass , would you let me know, please?" "OK." "Dan,you'reclear, go around." "OK,I 'mcomingaround." "Histruckis apretty decent-size truck but" "I could still squish him." "The blind spots are monstrous." "[narrator] Alice needs all the visibility she can get, but conditions ahead will make the driving even more difficult." "Idon'tlikethe lookofthis road." "We've already got a dust problem." "[narrator] Windstorms whip up dust, creating one of the deadliest obstacles in mining for drivers and trucks." "Oh,nuts." "Whatisgoingon over here?" "There's times when you can't see the mountains in front of you." "The dust gets that bad." "Dustisn'tgoodfor equipment or people." "It fills up air filters, it can fill up your lungs." "It's not good for anything." "[narrator] Dan's crew uses water to suppress the dust clouds." "But high on the mountain, Alice's truck needs its own defence against the choking air." "Comeon,babygirl!" "[narrator] If dust penetrates the engine, it will clog and kill its beating heart which must suck in 50,000 gallons of clean air every minute... to feed combustion inside its 20 cylinders." "So, to keep the air in the combustion chambers squeaky clean... ♪♪ the Mega Truck's design borrows from nature's most powerful dust busters:" "Tornadoes!" "Funnels of fast-spinning air that grow out of thunderclouds." "They wreak destruction when they hit the ground, ripping up everything in their path... spinning it high into the air and flinging it back out again." "But incredibly, the eye of the storm remains dust-free." "And that's exactly where the air comes from, feeding Alice's truck." "It breathes through cones that have tiny tornadoes churning inside." "They fling the dust against the sides, so the air in the centre stays clean." "450 tubes channel clean air from the eye of each tornado into the engine." "The dust simply drops out at the bottom, meaning Alice's truck can breathe freely." "Thereyougo ." "We madeit." "Welcome to the top of the World." "Look at that view!" "[narrator] After a dusty trek," "Alice reaches her first loading stop." "Now she's at the mercy of the mine's biggest excavator." "Oncewegetthisballetof ours completed, then I get to have a whole bunch of rock dropped on me." "He's loading out some pretty bony material." "[narrator] Even the world's biggest mine trucks are dwarfed by Larry Thompson's excavator." "Able to lift 120 tons in every scoop, this shovel demands respect." "Basicallywhatwe 'redoing out here is tearing down a mountain, and building another." "We can move upwards of over a million yards of dirt in a day." "I wouldn't want to do it with a pickaxe." "This machine's really got the potential to hurt somebody." "[narrator] In a risky manoeuvre," "Alice needs to back alongside the shovel to collect her first payload." "Letmetrytogetback in here." "[narrator] These machines are the size of two-story buildings." "A metal-on-metal collision could be disastrous." "Theblindsideofthetruck  is the side I can't see." "Makes it more of a challenge." "HeyAlice,keepcoming straight back." "Ten-four,willdo ." "I can't see." "Easy!" "[narrator] Cortez Hills Gold" "Mine, Nevada." "Thirty Mega Trucks have five days to haul 180,000 tons of rock and hit a" "40-million-dollar gold target." "HeyAlice,keepcoming straight back." "Ten-four,willdo ." "[narrator] In a meeting of metal giants, Alice backs her house- sized Mega Truck alongside the monster shovel to collect her first load of rock." "That'swhatit 'slike!" "(siren wailing)" "That's kind of what it feels like to have the bucket hit you." "Just kind of knocks you around a little bit." "(sighing)" "Thatonewasclose!" "Ha!" "Ha!" "[narrator] A 100-ton load would flatten most trucks, but this is no ordinary truck." "(grinding metal)" "Under its dump bed sit two weapons to cushion the blow." "(whirring)" "Gigantic shock absorbers." "(clanking)" "These metal cylinders evolved from landing gear used in aircrafts." "(propeller whirring)" "Early wooden planes grew so heavy... (tires screeching) that the simple springs in their landing gear took a pounding on touchdown." "So engineers invented... shock absorbers, hollow cylinders filled with compressed air and oil." "The air cushions like a spring, the oil stops the cylinders bouncing back, absorbing the crushing impact of landing." "The shock absorbers on Alice's truck take this idea to the extreme." "(clanking)" "Seven gallons of nitrogen and 10 gallons of a top-secret oil... wrapped in a toughened steel casing can cushion the impact of a Jumbo Jet." "Four hundred tons of rock compresses the cylinder by just 8 inches." "(clanking)" "428tons." "That'sagood load ." "Thanks Larry, you have a good day." "Ten-four Alice." "Andwe'vegotliftoff." "[narrator] Alice now faces a mile of rough road to reach the dump zone." "Packed with a 428-ton payload, she can only hope her truck's shock absorbers are up to the challenge." "(whirring)" "Thisgetsreallybumpy sometimes." "Knocks your socks off!" "[narrator] The journey to build the ultimate shock absorber began 2,500 miles east of the mine at the factory where these" "Mega Trucks are built." "Here, engineers test components to destruction and the shock absorbers undergo the most brutal field trial of all." "Ourtrucksareinsome ofthe most extreme environments in the world and also carrying some of the biggest payloads that you'll see." "So this is a real critical step for us to determine if we've made something that's going to survive in the environment we've put it into." "Wehavetwobumpssetupon the right hand side of the truck, which will twist the entire truck and will try to roll it." "(honking)" "AlrightJay,we 'regooddown here, it's in your hands." "Yes,sir." "(motor running)" "Here we go!" "There's the first bump, going to the second bump..." "There, we're finally through." "Yeah,thatwasagood one." "I'lltryandhit 15or16  this time, and she'll fly!" "Yeah,ten-four,hangon." "Neverdoneit  at this speed before." "Alright,holdhersteadyand give her hell." "Woohoo,thereshegoes!" "You had her rocking and rolling that time, Jay." "I think the data will be good for that one." "[narrator] This truck's shock absorbers have proved tough enough to take a full load over the roughest terrain." "Ithinkthat'lldo, Jay ." "(honking) [narrator] 2,500 miles west in" "Nevada, Alice is on her way down the mountain road to the dump zone." "It's a treacherous trek." "It'soverathousandfeet  down, quite a long drop." "[narrator] The hairpin bends make cornering extra tough." "Thisisthesharpestcorner coming up." "It can get pretty hairy sometimes." "[narrator] Alice's truck has unique front suspension to help her tackle these turns." "(clanking)" "Two arms shaped like wishbones suspend each wheel from the frame... (whirring) and hold them in perfect alignment as they bounce up and down... keeping the rubber on the road as the truck leans into the corner." "Flyingbytheseat of my pants, whoops!" "She takes it like a thoroughbred. 670 tons rolling down this hill." "She's hanging on to it like a dream." "[narrator] Load one:" "down the mountain." "But this rock contains no gold." "Until the excavators strike gold ore, Alice will dump hauls of waste rock over a cliff." "The only thing stopping her truck sliding down this 100-foot drop is a mound of earth called a" ""berm."" "Youbackup to yourberm pretty slow." "[narrator] Every driver knows a mistake here can be fatal." "Ihaveheardstoriesof people going through berms." "From what I've heard, they usually don't make it through the process." "And then just kiss the berm." "Alright!" "There we go, I got it." "Ha!" "Ha!" "(garbled radio transmission)" "OK." "And we're set, let's dump." "There goes my load:" "428 tons of material." "[narrator] First load dumped." "Alice must now pick up the pace to haul another 15 truckfulls of waste rock within the next" "10 hours." "We'rebookingit ." "They're keeping the shovel swinging, so hopefully we'll get to the ore soon." "[narrator] To keep the excavators and the trucks fed with rock, the mine calls in the heavy artillery." "Tim,we'rereadytorunour fire line out." "Take it about 200 feet, please." "No blast team, no production, no one's moving." "[narrator] The blast team drills 130 holes, 45 feet down into the rock, lowers in detonators... and pumps in an explosive mix of fertilizer and diesel fuel." "Ourbasicgoalistoliftit, break it and set it right back where it started." "[narrator] The truck fleet pulls back to safety, half a mile from the blast zone." "Alice has been at the wheel for seven hours." "Takinga break." "AndI actually get a shot of the blast today." "That'll be quite nice." "Then I get to move it all." "(man on radio):" "We have three minutesuntilfireinthehole" "(siren wailing) [narrator] Countdown underway, the mine goes into lockdown." "150detsreadytofire ." "(man on radio):" "Ten-four." "[narrator] Half a million tons of rock is about to fly." "(man on radio):" "Firing shot one in phase five." "(explosion)" "(man on radio):" "We have three minutesuntilfireinthehole" "(siren wailing) [narrator] At the wheel of her" "Mega Truck, Alice Woods has moved over 5,500 tons of rock in seven hours." "Now the blast team is about to free up a whole lot more." "(siren wailing) 150detsreadytofire ." "(man on radio):" "Ten-four." "Firing shot one in phase five." "Shot one has fired." "Shottwohasfired." "(explosion)" "(garbled radio transmission)" "Thatwasprettycool." "A lot more material to move." "Thatisclose to 550,000 tons." "(honking)" "Keep those shovels mucking and those trucks rolling." "(explosion) [narrator] Under half a million tons of freshly blasted rock lies a priceless pocket of gold ore." "Before her week is done," "Alice must move it." "Bringingonthatgold." "Mmm, bling, bling!" "[narrator] 48 hours into" "Alice's five-day mission." "It's 105 degrees, the mercury's rising and so are the stakes, with only three days left to uncover 40 million dollars worth of gold." "Phew,it'sahot one today." "(sighing) [narrator] Today she starts hauling gold ore." "It looks identical to waste rock, but confusing the two up is not an option because each truckload of ore could be worth well over $100,000." "DispatchtoallCortezHills traffic." "We just moved into an ore body, so watch your assignments." "Well,itlookslikewe're finally getting into some ore and this one is the money-maker." "(garbled radio transmission)" "And we actually get to go someplace different." "[narrator] The blasters uncovered the new seam of gold ore in the giant pit beneath the mountain." "But the only access is down a steep new road." "Oneoftheissueswith the new road is that we've got quite a steep grade on it." "We don't want them sliding into the pit, we want them driving into the pit." "First couple guys in are always the leaders of the pack," "I guess you can say." "Wow,herewe go !" "[narrator] Yet to be flattened by the weight of trucks, the road surface is strewn with loose rock." "Drivingonanew roadis usually a hellaciously bumpy experience." "There's usually a little puckeridge and you're kind of going yoohoo, yeah!" "[narrator] Alice is banking on the truck's 13-foot tall tires to grip the steep slope." "(clanking metal)" "They have a revolutionary tread imprinted deep into the rubber... giving grip on even the steepest, roughest roads." "They owe their existence to more than a century of tire evolution." "Early vehicles had smooth rubber tires, but their lack of grip proved disastrous." "(screeching tires)" "(meowing)" "The solution mimics" "Mother Nature." "Cats are nimble even on slippery surfaces, thanks to an intricate pattern in their paws." "The soft pads and deep grooves between them create unbeatable grip." "Alice's truck supersizes this feline footprint." "♪♪" "The grooves running through its tires are as wide as a fist." "As a defence mechanism, they even clean themselves." "The weight of the truck squashes the rubber, squeezing out any small stones that get trapped in the tread, protecting the truck on the roughest roads." "They'remonstrous, they're magnificent." "They're just really neat." "[narrator] The Mega Truck's tires may be tough, but they're not invincible." "Seethoserocksontheside of the road over there, you don't want to get into those." "Those can bust a tire." "[narrator] The tires can spit out small stones, but large rocks can explode them open." "Whentireson thesetrucks blow, it's like an earthquake." "We were told during training about a man who was killed in a big truck like this." "His tire blew right underneath him and it blew to where the pressure came up through the cab and it killed him." "[narrator] The mine has an army of mechanics working around the clock to keep its fleet of thirty Mega Trucks running safely on the road." "A tire change for this truck is no split-second pit stop." "Spinthetirefor me." "Yup." "Urgh!" "[narrator] They change each tire after 85,000 miles." "Yeah!" "[narrator] If it exploded now, the force could blast this mechanic over 300 feet through the air." "Wehaveto deflatethe tire before we work on it, so everything can be compressed in and we can disassemble." "[narrator] Removing this five-ton piece of rubber takes a special tool." "Goaheadandgrabit,Jake." "[narrator] The tire handler." "Its giant pincers squeeze the deflated tire, so the crew can force it off with a pneumatic ram." "Allright,getback,Vince." "(whirring)" "[narrator] Each new tire costs up to $70,000." "Hehasfivetonsintheair and as you can see I'm standing back to make sure if he does lose control of it, I'm not going to get squashed." "There's a lot of pieces." "It's like a puzzle and you just got to fit the pieces together properly." "One, two, three!" "Allright,I'mgoingturn  the air on and it's hopefully just going to take air." "Yeah, it's a ticking time bomb once it's pretty much loaded." "[narrator] On the steep road into the pit, if Alice's tires lose their shape, they will lose their grip." "So, buried under their thick skin is a gigantic web of wires, two layers deep." "There's enough steel to build two small cars." "And it's wrapped in enough rubber to make 600 car tires." "Each of these monsters can carry over 110 tons and still keep their shape." "Aw,nuts." "Gotawatertruck  right in front of me." "She's gonna make it nice and slimy." "[narrator] As Alice nears the bottom of the steep pit road, the mine's dust dousing water trucks will test her tires once more." "Ew,that'sslick!" "Fishtailing." "The front tires are not going as fast as the back ones want to go." "Oh no, and I am sliding!" "And... sliding." "Sliding." "Coming in a little bit too close to that water truck." "Come on, baby, grab, grab, grab!" "[narrator] Cortez Hills Gold" "Mine, Nevada." "The fleet of Mega" "Trucks is three days into their five-day-40-million-dollar mission to haul 180,000 tons of rock." "On the steep road into the pit to collect her first payload of ore, driver Alice needs her truck tires to grip the wet slope... fast." "Comeon,baby." "Gettinga little bit too close to that water truck." "Almost didn't make that one!" "(sighing)" "Phew!" "Made it to the bottom!" "What side would you like me to go on?" "(man on radio):" "The one up on your left." "(garbled radio transmission)" "He'sjustloadingmeup with a whole bunch of money." "[narrator] This 400-ton load of high-grade ore could contain as much as 100 ounces of gold." "(honking)" "Worth around $130,000." "Alice now faces the mine's steepest ascent to deliver it to the mill." "Goaheadfordispatch." "[narrator] Supervisors keep an eagle eye on every payload of ore." "Thestakesarehighwhereour trucks go." "One of my jobs is to make sure that these guys are going where they need to go." "If I have a driver that loses a load of ore, it can be a firing offence." "Ifyou'vegotore on, you  don't want to spill any." "They don't like that." "You just can't lose power when you're doing it." "You got to keep your pedal to the metal and keep going." "[narrator] Her job on the line," "Alice can't risk losing any ore." "She needs the truck's massive engine to thrust her smoothly up the hill." "Its 20 cylinders guzzle 100 gallons of diesel an hour." "And 300 violent explosions happen every second." "To store the 4,000 horsepower they produce, the engine is attached to an enormous flywheel." "Amazingly, this wheel's design has its roots in ancient Egypt." "Egyptian builders used flint drills to shape the stone blocks of the pyramids." "But the hand-cranked tools were slow and inefficient." "So Egyptian engineers attached a weight to the top of the drill." "This stored energy to drive the drill with constant power." "4,500 years later, a souped-up version of this primitive invention transfers the engine's explosive power... to drive a 3-megawatt electric generator." "(clanking)" "It creates enough power to run a small town and spins electric motors deep in the wheel hubs." "This gives Alice full throttle the second she puts her foot down, even on the mine's steepest hill." "(clanking metal)" "Comeon,baby, let's get out of here!" "[narrator] At the Mega Truck factory in Virginia..." "We'regood." "[narrator] Installing the machine's engine is a huge feat." "It weighs over 11 tons, as much as six SUVS." "Allright,I'mhookedup." "[narrator] And it costs over half a million dollars." "Alittlenervous." "Whenit's  in the frame, I feel a lot better." "It's a little too much weight here!" "[narrator] Dropping this hunk of horsepower just isn't an option." "Everybodywatchyourfingers!" "And we're down." "Good job, everybody." "Another job well done!" "Goodjob!" "Goodjob,goodjob !" "[narrator] At the mine, her truck's engine powers Alice up the hill onto level ground... but there's no mill in sight." "Oh,youknowwhat,I'mgoing  the wrong way... (garbled radio transmission)" "I'm going the wrong way." "Pulling a u'ey..." "Whoops!" "Pulling a u'ey, I muffed up," "I'm going the wrong way." "(laughing)" "Go back the way I came!" "[narrator] 400 tons of gold ore delivered and not an ounce lost on the way." "Couldbealot ofmoney in that one." "There will be a lot of money in that one." "[narrator] At the mill, the ore needs crushing and processing to extract the gold." "To succeed in this week's mission, Alice and the truck team need to deliver another 100,000 tons of ore in the next 48 hours." "Mercy,it'sgettinghot !" "[narrator] But with the heat soaring upwards of 105 degrees, the whole mine is now on fire alert..." "Everyliquidin thattruck will burn." "[narrator] At Cortez Hills Gold" "Mine, Nevada, Mega Truck driver" "Alice Woods has clocked up 400 miles in four days and hauled 18,000 tons of gold ore." "Goingtoheadoninandfill her up." "She's thirsty, we'll be here for a short bit." "[narrator] Her truck burns through a 1,200-gallon tank of fuel twice every day." "Thedieselfuelispumping into this truck at 120 gallons a minute, about like you'd be pumping into a jet plane when it's fuelling before take off." "You do the math!" "Four dollars a gallon at 1,200 gallons?" "It'll be $4,000 at 1,000 gallons even, that's quite a bit of change right there." "Icertainlyhopewegeta  break in this weather." "This over a 100 degree weather is sweltering." "I'm having a hard time dealing with it." "[narrator] This heat is a threat to the whole mine." "If the trucks' massive tires get too hot, the friction can start a fire, which could spread fast." "Everyliquidin thattruck will burn." "Since this mine has started we've had two haul trucks that have burned to the ground." "Luckily nobody got hurt in either one of them." "But it doesn't take very long to burn them to the ground." "It'sjustamazinghow much heat these things produce, and a fire would be the last thing you would hope to have to deal with." "[narrator] But Alice's truck is on constant fire alert so she doesn't have to be." "(clanking metal) [narrator] Under its skin, 330 feet of stainless steel pipes act as life-saving arteries." "They connect to tanks of fire-fighting powder." "High-pressure nitrogen canisters are poised to blast the powder to 36 high precision nozzles sitting in every corner of the truck." "It's a giant network of chemical sprinklers that evolved from the world's first automated fire-fighting system, invented in 1723:" "the Fire Annihilator." "A capsule filled with gunpowder was suspended in a barrel of water and connected to heat sensitive fuses." "Any fire would light the fuses, which would ignite the gunpowder and blast the water onto the flames." "300 hundred years later, the Mega Truck swaps gunpowder for nitrogen, but it still has fire-sensing fuses." "Excessive heat triggers a mechanism inside them that shoots the fire-fighting powder at high pressure to all the truck's potential hotspots." "It's a system clever enough to kill almost any fire." "Ifeellikesometimesmybaby girl is watching out for me a little bit." "I just feel like she's watching my back." "[narrator] Safety protocols call for regular fire drills across the 30-strong fleet." "Youtaketheone tank, you take the second tank." "[narrator] $16,000 worth of fire suppressant powder must be set to shoot in seconds." "Thisislifeand death." "We need these systems to work properly so these drivers can get out and get back on the ground safely." "Thesetruckscanburnvery  quickly." "You have a lot of heat and a lot of possibility of things catching on fire in the engine compartment." "Could be a firebomb on this thing." "This is your main area that, if there's going to be a fire, this is where it's going to be." "[narrator] To test this truck..." "Youready,Taylor?" "Yeah,goahead!" "[narrator] They warm up one of the heat sensitive fuses to trick the system into thinking there's an engine fire." "(siren wailing)" "Driver Doug has just 15 seconds to evacuate." "(siren wailing)" "Alright,guys, moment of truth, here we go!" "Lotsofchemical,woo !" "That'sdefinitelygoingto knock the fire down on that one." "No questions asked there." "Goodjob!" "Goodjob,Taylor.240 lbs of chemical laying on the ground." "Yup." "GladIdon 'thave to clean that up!" "[narrator] Tests like these... help Alice complete her mission in the searing heat." "Mytruck'srunsmoothlythis  whole week." "Pride of the fleet and she's doing really well." "[narrator] After 60 hours at the wheel, she has hauled" "23,000 tons of precious ore." "Lastloadof theday ." "We're heading to the barn." "All 30 trucks head in, their jobs complete." "But inside the refinery, it's crunch time." "A team must now extract the gold." "HeyTony,you'regoingtobe  ready in about an hour?" "(muffled response) [narrator] It's the critical final step, a process called smelting." "The team crushes the ore into a fine powder, mixes it with chemicals and heats it to 2,000 degrees Fahrenheit." "Weliketo runbetween20,000 and 30,000 ounces per week." "At 30,000 ounces, that's about 40 million dollars at today's price." "[narrator] Will this week's haul by Alice and her team meet their quota?" "Thisisan excitingtime because this is where all the culmination of all the work comes together and we actually see the net result." "We never get tired of seeing the gold, it's beautiful!" "It looks like this bar's valued at $1,065,252." "[narrator] They've hit their target: 180,000 tons of ore has produced 40 million dollars of gold." "Ittakesahellofalotof rock to produce this amount of gold." "[narrator] Thanks to Alice and the truck crew, Cortez Hills retains its title of America's biggest gold producer for another week." "Bye,Alice!" "Bye,Craig!" "We did really well." "So I'm going to head home for four days off and then come back and do it all over again!" "I'm going to sleep first." "[narrator] But there's no rest for Alice's Mega Truck." "This fleet of mighty machines haul rock 24/7." "Every year, each truck moves 3,5 million tons across 70,000 miles of the very toughest terrain." "It's all thanks to shock absorbers strong enough to land a jumbo jet." "(clanking)" "A life-saving fire-fighting system." "Five-ton, super-grip tires, an engine as powerful as a freight train, which is fed with air cleaned by mini tornadoes." "It's these technological secrets that have helped this truck evolve to rise above all other machines." "Subtitling:" "Epilogue Technical Services"