Simon Travis, Guy Ipoua, Stacy Coldicott and Andy Ferrell will all be unavailable for tomorrow's game at Woking.
Travis, Ipoua and Coldicott are said to be training but still short of fitness. Andy Ferrell is suspended after being red-carded last Saturday in the match against Kidderminster.
As for Woking, according to BBC Sport they will give late fitness tests to Karl Murray, who suffered a burst blood vessel behind his eye last week, and Justin Richards (ankle).
Chris Sharpling, who was out with a knee injury, is now out for another month after a hernia operation.
Last Tuesday Woking lost 1-0 at Halifax on a pitch that was described as awful. The goal came after from a free kick which appeared to be taken before the Woking defence was ready.
Later Woking goalkeeper Shwan Jalal was said to have complained bitterly to referee
Rob Shoebridge as the pair went down the tunnel at half-time about the free-kick.
Meanwhile Hereford United's Tony James has told the Worcester News of his thoughts about tomorrow's game at Kingsfield.
"Woking is not an easy place to play," said James. "They are a very dangerous side and they still have something to play for.
"They are a good pacy team and if they get everything together, they can cause us problems. We've got to be careful."
"But the one good thing is our defensive record is the best in the league and it is important we give nothing away."