According to reports from the scene, the first firefighter fell and fractured his knee, and the other twisted his ankle.
Of the 14 cabins in Holy Jim Canyon where Clark lives, his was the only one to remain standing.
The forest service said: "We continue to actively engage, but can not get ahead of the fire".
Damage: 221 structures have been destroyed, 27 structures have been damaged and another 10,300 structures are threatened.
Information released by the Cleveland National Forest, which is where the fire is burning, indicates that in addition to the weather, steep terrain, and limited access, another reason they are losing ground is they are not able to obtain all the firefighting resources they have requested. Currently, there are 404 fire engines, 93 water tenders, 19 helicopters, 84 bulldozers, and 4,019 personnel tasked with containing it.More news: Human case of West Nile Virus reported in Cascade County
The state's largest wildfire in history has drawn a contingent to battle what is actually two fires burning so closely together that they're being attacked as one.
In addition to the Holy Jim fire, he is accused of starting a fire in Trabuco Canyon.
Ziggy Torok and Starla Affatati watch helplessly Thursday as the flames of the Holy Fire close in on Torok's home in the Rice Canyon neighborhood of Lake Elsinore, Calif. "I got burned. I woke up and my stuff was all on fire".
A spokeswoman for the Orange County District Attorney's Office said Clark had previously made threats against a neighbour, but declined to elaborate. Meanwhile, no one has been killed by the Mendocino Complex Fire, though two firefights have been injured and 119 residences have been burned.More news: Ian Wright states his prediction for Arsenal v Man City
Before he was arrested, Clark told a freelance cameraman he was asleep when the fire started and had no idea how it began.
Institute. Those areas had previously been under voluntary evacuation orders.
Clark refused to leave his jail cell Thursday, so his arraignment was postponed until Friday.
In the Redding area, the year's deadliest fire was almost half surrounded and was burning into remote and rugged forest land but grass, brush and trees there are so dry from years of drought and recent heat that the potential remained for the fire to grow, state fire officials said. "Who would go out with low humidity and high winds and the highest heat temperatures this time of the year and intentionally set the forest on fire?". But he did skewer "radical environmentalists" for opposing forest management efforts, which include tactics like prescribed burns, forest thinning and logging to clear overgrown forests of excess vegetation and dead trees.More news: Redskins rookie RB Guice to miss season with torn ACL