The siege of Bedford Castle required huge resources. Siege engines were brought from Lincoln, Northampton and Oxfordshire, while carpenters built others on site using timber from Northamptonshire; ropes from London, Cambridge and Southampton; hides from Northampton and tallow from London. Labourers from across Bedfordshire and Northamptonshire were gathered by the relevant sheriffs, and miners from Hereford and the Forest of Dean. Crossbow bolts were ordered from a depot at Corfe Castle and from the provinces; 43,300 crossbow bolts are known to have been ordered by the king. Local trees were cut down, and stone quarrying begun to provide ammunition for siege engines. Tents and pavilions for the King were sent from London along with supplies of luxury foods and wine, also for the King. In total, Henry's wage bill for the siege came to £1,311; it is uncertain exactly how large Henry's army was, but potentially there were between 1,600 and 2,700 men present at any one time. To support the siege, Langton instructed his bishops to mobilise one man from every 24 hectares (60 acres) of land they owned and levied a special tax on the churches' estates.