When you create a world edit this file: (blockplaceholders.xml) They all will be busted after this edit when you generate the world.
find:
<placeholder name="lootWorkstationsBustedHelper">
<block name="forge" prob="1"/>
<block name="cntCollapsedForge" prob="10"/>
<block name="workbench" prob="1"/>
<block name="cntCollapsedWorkbench" prob="10"/>
<block name="cementMixer" prob="0.6"/>
<block name="cntCollapsedCementMixer" prob="6"/>
<block name="chemistryStation" prob="0.6"/>
<block name="cntCollapsedChemistryStation" prob="6"/>
</placeholder>
<placeholder name="lootForgeBustedHelper">
<block name="forge" prob="1"/>
<block name="cntCollapsedForge" prob="10"/>
</placeholder>
<placeholder name="lootWorkbenchBustedHelper">
<block name="workbench" prob="1"/>
<block name="cntCollapsedWorkbench" prob="10"/>
</placeholder>
<placeholder name="lootCementMixerBustedHelper">
<block name="cementMixer" prob="0.6"/>
<block name="cntCollapsedCementMixer" prob="6"/>
</placeholder>
<placeholder name="lootChemistryStationBustedHelper">
<block name="chemistryStation" prob="0.6"/>
<block name="cntCollapsedChemistryStation" prob="6"/>
</placeholder>
replace:
<placeholder name="lootWorkstationsBustedHelper">
<block name="cntCollapsedForge" prob="10"/>
<block name="cntCollapsedWorkbench" prob="10"/>
<block name="cntCollapsedCementMixer" prob="6"/>
<block name="cntCollapsedChemistryStation" prob="6"/>
</placeholder>
<placeholder name="lootForgeBustedHelper">
<block name="cntCollapsedForge" prob="10"/>
</placeholder>
<placeholder name="lootWorkbenchBustedHelper">
<block name="cntCollapsedWorkbench" prob="10"/>
</placeholder>
<placeholder name="lootCementMixerBustedHelper">
<block name="cntCollapsedCementMixer" prob="6"/>
</placeholder>
<placeholder name="lootChemistryStationBustedHelper">
<block name="cntCollapsedChemistryStation" prob="6"/>
</placeholder>