A very short summary from the link posted by Paca
above, and my quick translations:
Chapter 76: Form of a man, form of a stone.
Al and others are walking in the snow. It is said that the one who brought the Alchemy to the Xing was an immortal man with golden hair and golden eyes.
Meantime, Miles and the company try to attack Kimbley, but Kimbley learns the plan and escapes.
Ed chases Kimbley, and they fight. Ed cuts Kimbley's palm and kick out the Philosopher's Stone. Ed is relieved, but there was another stone. The explosion ensues, and Ed falls into the mine shaft. Ed realizes that an iron pole is running through his body. Ed loses consciousness. Al screams...
: Here is longer Chapter 76 Preview Spoiler Summary
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My quick translations:
Fullmetal Alchemist Chapter 76: "Shape of a Man, Shape of a Stone."
(Note: It's an interim chapter title by me till we read actual chapter 76. ^^)
As predicted, the Philosopher's Stone plays the key (in the fight against Kimbley) in this chapter.
Ed is teaching about the Philosopher's Stone to others in order to plan the attack against Kimbley.
Ed says he had never seen any Philosopher's Stone larger than the size of pebbles. To make larger stone, that must have been created using huge number of human sacrifices, hence he would not even want to see it.... Overwraps Hohenheim' s image...
The storm has subsided. Miles is ready to sniping down two guards for Kimbley from the distance. Ed suggests to catch them and get the information instead. Miles lectures Ed about the Laws of Briggs. Ed shuts up. Then Miles tells that he feels envy about Ed and Al who choose saving lives over killing.
The scene changes to somewhere in the mine tunnels.
Marchor and his company are trying to read Scar's brother's research notes.
(Below is from the research notes)
*In Xing, it is said that an immortal man = true man = perfect man.
*Gold is a perfect metal, hence.. true man = Gold man.
*It is said that the person who brought the Alchemy to Xing was an immortal man with golden hair and golden eyes, hence the above saying.
Scar comes out to the entrance of the tunnel and meets up with Al.
Al tells them that Briggs Fort has solders from the Central now, and the mjor General Armstrong was summoned by the Central, and hence they can't hide at the Briggs Fort now.
Winry asks that Kimbley might catch that Al is missing fro Ed's group, and Al tells Winry that Ed will probably come up with something.
Meanwhile... Ed, Miles and the company meet up with Kimbley's company. There is Al, moving rather awkwardly. Ed transmuted "imitation" Al's armor and there is a solder inside. "Imitation" Al speaks like a military man. XDD
Miles tries to catch a good timing to shoot Kimbley. Kimbley realizes, and blows up snow so that they can't see Kimbley, and escapes. Kimbley's guard solders turn out to be more chimeras.
One chimera fight Ed, another goes ahead and enters the mine tunnel in search of Scar and the company.
Ed fights the chimera solder. Ed can't see because of the snow. On the other hand, the chimera uses his nose. Miles tries to help he also can't see in the white out.
With the limited visibility, Ed falls into the mine shaft.
Ed faces chimeras who followed Ed in the mine tunnel. Ed tries to scare chimeras with the dynamite. Chimera says it wouldn't work because it's wet. Ed transmute ammonia from the ingredient of dynamite, and the chimeras with the keen nose go belly up.
Ed faces Kimbley. It seems Kimbley knows about (their scheme about) Winry.
KImbley quickly turns to using Philosopher's Stone.
Ed feels this is a good chance to use the technique he has devised against Kimbley.
Aided by lightened Automails Ed succeed in taking out the Philosopher's Stone inside Kimbley's hand, and also able to damge Kimbley's Transmutation Circle on his palm.
Ed feels the victory, and he didn't even have to kill Kimbley... Or did it??
Kimbely tells Ed that Ed's conviction about "not to kill" even in the battle and the lack of thought that the person might have more Philosopher's Stone would be Ed's downfall... Kimbley takes out another
Philosopher's Stone which he had swallowed during the Ishval War, and perform Alchemy.
The building around Ed collapses. Ed coughs up blood. He sees an iron rebar penetrating his side. Ed loses consciousness.
The same moment, Al falls down. Al: "My soul is being pulled!!"
Winry screams: "Someone!! Ed!!" The sight of both Ed, and Al down on the ground.....
(And, that's the end of chapter 76, the story continues to chapter 77.)