Discovery Channel HD Wednesday

The materials and manufacturing processes used in whips, automatic pizza-makers, incense cones and model jet engines

The production methods used for beet sugar, film used in instant cameras, and electric roadsters

A train hauling the biggest load ever moved on the Alaska Railroad suffers a communication shutdown, which leaves the locomotive hurtling towards a 'dead zone'

The arrival of the spring thaw puts railroad staff on high alert, and crossing the Hurricane Gulch causes a freight train to stall on the line's highest bridge

Aaron, Jake and Tori hope to find a skull at the Duckbill site. Clayton begins to excavate the T-Rex site, and Mike travels to Utah to prep the T-Rex skull

When a wildfire surrounds his hometown, Clayton Phipps helps fight the flames. Plus, the Abercrombie family discovers a Mammoth fossil map on their ranch

Chad is tasked with his first-ever motorcycle build. With the Wharf Rat Bike Rally just weeks away, can he beat the clock to finish this one-of-a-kind chopper?

Chad attempts to transform a rusted-out 1971 Pinto into a European-style performance car, and he must overcome a mountain of problems and beat a tight deadline

Part one of two. Kris attempts to save his season with a move that may be his worst idea yet. Shawn hunts for a pay streak to solidify his position at the top

Part two of two. Kris attempts to save his season with a move that may be his worst idea yet. Shawn hunts for a pay streak to solidify his position at the top

While digging out Vegas Valley, Rick prospects a new area in Keno that could be richer than anything he'd mined

Foreman Mitch Blaschke steps in as mine boss for the day and immediately encounters broken water pumps, rock trucks and excavators

A builder heads to the wilderness of northern Colorado to build the ultimate tent with a custom fabricated wooden frame, canvas shell and a 650-square-feet interior

The bidders take a gamble on vintage casino and advertising items, including a Bob's Big Boy statue, in Las Vegas

At a gambling auction in Las Vegas, the bidders take notice of a Gatling gun and a rare advertising piece for a brand of cookies

The boys desperately want to buy policeman Jordan his dream car, a Subaru Impreza. Elvis surprises Mike as he dips into his contact book to buy a kit car

Derek and his brother Sean head back to their family farm in North Dakota. They dig out a 1971 Chevrolet Chevelle sedan that has a waterlogged engine

Locals face off in Ohio before the $5,000 winner goes up against the infamous Kye Kelley, but Kye is worried about how the race will go down

Derek heads to Lompoc, California, where he enlists David Freiburger to help him sort through a 1940 Chevrolet gasser's long list of issues

Pilot Jaime and his girlfriend Dusty take to the sky to find their own piece of the remote town of Seldovia on a tight budget of $125,000

Jeremy and Danielle are newlyweds who want to buy their first home in Homer, Alaska but they don't have a lot of money. Will their budget of $150,000 suffice?

Mark and Digger spot an unmarked vehicle surveilling their barrel house. A friendly run of liquor with Big Chuk lands Josh in a high-risk environment

Locals face off in Ohio before the $5,000 winner goes up against the infamous Kye Kelley, but Kye is worried about how the race will go down

Derek heads to Lompoc, California, where he enlists David Freiburger to help him sort through a 1940 Chevrolet gasser's long list of issues

Dominator and Damon are both under pressure to turn around their poor form. Meanwhile, Big Chief is determined to end Daddy Dave's winning streak

The team has a shocking sighting, only to see the lead slip through their fingers. Then, a ground-breaking tip leads to an unexpected change of plans

Buying goods from home

Buying goods from home

How underwater robots, ski and trekking poles, band saws and lasagne are made

The development of laminated wood beams, sports utility vehicles and veggie burgers and how manufacturing processes have developed over the years