1.   First they hauled a heavy sled of timber and railroad rails over the gusher.

2.   Kaminski and a friend successfully walked to the North Pole with no assistance this spring, dragging heavy sleds with food and equipment.

3.   Men and women compete in two runs on one day, guiding heavy sleds belly down and headfirst.

4.   They hope to use parasails to drag their heavy sleds across the Ross Ice Shelf, a mostly flat slab of floating ice bigger than France.