are a classic direct action tool. Get them from bike shops - the more you pay, the stronger they are. They fit neatly around pieces of machinery, gates and your neck. It is worth working in pairs when trying to lock on. The person to lock on carries the U shaped section, and loops it around both a suitable fixed piece of machine and their neck. Then their "buddy", carrying lock barrel and key, secures the lock, and hides, or runs off with the key. If locking on to a machine, someone must let the driver know that operating it will break someone's neck. If locking on, you may be there for some time, so choose your point carefully. They may remove any blankets or seats you have, and isolate you from other protesters, sometimes forming a screen around you.
You may want to keep a spare key about your person but they may search you for it. If the buddy stays (with key) within earshot, then you can be released in an emergency. It is important that anything you lock onto cannot be removed or unscrewed. Gates can be removed from their hinges, so consider securing the hinge side as well as the opening side. Most contractors have their own hydraulic bolt croppers, which cut the strongest lock in seconds. The lock gives a frightening jolt when cut, so don't lock on if you have a neck injury. Locks are most effective on targets remote from croppers.
are particularly good underneath machines if you can find inaccessible bits to lock yourself to. They have also been used in tree evictions to attempt to "capture" bailiffs. Loops of strong cord or tape can often be just as effective and are cheaper. Decent handcuffs are difficult to find. Army surplus or "sex shops" sometimes sell weak but expensive ones. Most handcuffs can be undone with a standard key type, which security, police and bailiffs often carry.
(from army surplus shops) are quite good, pocket-sized and tricky to get off. However, some would argue that contractors may take less care if it is just your thumb locked on. Try to get double-locking ones which won't keep tightening.
It works as the tape goes around your shoulder blades directing the pressure around your back rather than on the coat. The loops are very difficult to get to, being under your garments and under your armpits. They may rip or cut your coat to get to them, so use an old coat.
Cable will require a loop at each end, secured with U-bolts with screw threads mangled, so that they can't be undone. Get the best D-lock you can afford and use it either to directly lock the end to the cherry-picker, or loop the cable or chain around part of the bucket, locking it back to itself. They shouldn't be able to cut this unless they start to carry expensive hydraulic bolt croppers in every cherry-picker. If they do, throw them to the floor. If they send another cherry-picker up to rescue the first, catch that too!
A shorter tube can be used by one person around a digger arm or prop-shaft for example. For comfort, pad the top of the tube, and keep your arm lower than your heart to maintain blood flow. The number of people in arm tubes determines how large an object you can encircle. If you lie down as a group of say ten people (i.e. 10 tubes) with your feet in the centre of a circle, quite a large area can be covered. Arm tubes have been used to blockade gateways, roads and even airport runways. To remove you, they must cut the tube using hacksaws or angle grinders. Once one tube is cut then the whole circle is broken.
All lock-ons are constructed from an arm tube, with a metal crossbar at the bottom, which is then set in concrete. The concrete mix, 1 part cement to 3 parts sandy aggregate, can be strengthened using washing up liquid. Pieces of chopped-up tyres and metal mesh can be added to the mix to hinder drilling out the concrete. Surround the cross bar and arm tube with lots of metal, e.g. a car wheel. The concrete ideally needs months to set to its full strenght. Make them well in advance. On some campaigns, gas canisters have been conspicuously embedded in the lock-on, to deter use of power tools. This has led to the police threatening arrest for explosives offences, so those lock-ons were dismantled by protesters. When building, plan for a comfortable locking on position.
If you're making lots of lock-ons over a large area in a short time, a mobile concreting team with a small mixer might be a sensible way to organise. Ideally, the person who makes the lock-on should be the person who uses it. Try to keep the location of lock-ons quiet and perhaps have one show- piece lock-on to demonstrate to new people.
To lock-on, put your arm down the arm-tube and use climbing tape (perhaps reinforced with wire) plus a karabiner, or anything strong and comfortable which can join your arm to the cross bar. The bailiffs will remove you if they can without actually cracking the lock-on. They often stick a hooked blade on a pole down the tube, to cut any cord or tape attaching you to the lock-on. Fibre-optic remote scopes have been used to see what your arm is attached with. Padding the arm-tube with foam, fabric, cardboard etc, can hinder this. Of course they may tickle you, use threats and intimidation or inflict pain using pressure points or twisting your arm until you unlock yourself. If you are up a tree, they may light fires underneath you to smoke you out.
If they can't get your arm out, they will firstly use an angle-grinder or similar to cut through any outer barrel or other metal coating, then use small pneumatic drills to get through the concrete. They will then need to cut through the arm tube - probably using an angle-grinder. Try surrounding the arm tube with several concentric tubes of increasing diameter, with the spaces filled with concrete to slow their progress further. All this should take quite a while, and will be noisy, dusty and scary. Have your own goggles, ear plugs and dust mask. Prepare for a long stay with food, water and warm clothes. Lock-on at the very last moment as it can be uncomfortable, and go to the loo first!
Dig a hole and drive metal rods halfway into the surrounding soil from the hole before pouring the concrete in. Use one of the rods as the cross bar for the arm tube. Ground lock-ons are best positioned on access routes and at the base of trees. If you can build it amongst the tree's roots, this will reduce the area they have to work in.
Multiple arm tubes are more sociable and restrict access to the lock-on, due to the number of people lying around. Try placing something over a lock-on, leaving enough room to get your arm to it. Cattle-grids, steel plates, lorry wheels and dead cars have all been used. To make it even harder, weld the object to the lock-on.
Alternatively you could build a scaffold / steel bar sculpture, embedded in concrete, leaving only enough room in between to lock-on. You could use rotating bars for this sculpture. Place metal bars inside scaffold poles, packed with grease and ball bearings. Weld the ends to seal them. The rod will spin inside the pole if they try to cut it with an angle grinder. These bars could also be embedded in a lock-on. Ground lock-ons in the bottom of a deep, narrow shaft should force them to dig down to you to before they can attack the lock-on. Lock on with your feet. One lock-on has been made with ski-boots!
Find a sturdy fork in a strong tree. You may need to build a small platform as a base. Then build the lock-on up the tree, hauling cement up a bucket at a time. Make it big, or they'll lower you still attached to it. They may chip some of it away, then lower it. Try and place it somewhere awkward.
Felled tree lock-ons:
With this method, each felled tree returns to haunt them! If doing a single lock-on, drill a hole the diameter of your arm and a forearm's length into the thickest part of a felled trunk. To make the hole use a large auger or a chainsaw (very carefully). Remove the bark gently and use it to conceal the finished work. Get a steel eye with a strong screw thread on it, e.g. a gate hinge eye, and screw it into the bottom. Lock onto this.
Alternatively, you could drill all the way through so that two people can lock their wrists together, in the middle from either side. Reinforce the trunk by hammering nails and bits of metal around the lock-on. Smaller logs can be used as a mobile road blocking lock-on.
Some suggest that similar lock-ons in living trees would be effective and wouldn't kill the tree, but this is very controversial and likely to upset a lot of people.
These are made from frayed synthetic rope or fabric. If flicked at the chainsaw blade, the whip will catch in the saw teeth, and be dragged into the drive mechanism. Make sure you let go! The synthetic fibres clog up the drive mechanism and may melt into it. Note which direction the saw teeth are moving, so that you whip the correct side.
Fine grain sand, mixed with wallpaper paste and short lengths of fishing line, can be used to stuff condoms or balloons. Throw these at chainsaw blades. The mixture needs to be viscous so that it sticks to the blade when it hits.
Try coating the tree at chainsaw level with sticky biodegradable gunk, such as molasses. You can embed sand, kevlar pieces (from tree surgeons' protective trousers) and pieces of wire into the gunk.
Invasive Tree Defence:
There is debate as to whether this is a holistic and nonviolent tactic. Some feel it harms the tree and causes it pain. Others counter this by saying that if trees face death, then some damage done trying to protect them is acceptable. Iron does not kill trees, but copper or brass will poison it.
The safest, and arguably most useful, invasive technique is to wrap the tree in frayed polyprop covered in stapled-down chicken wire and metal cable, nailed down corrugated iron and other bits of metal, bitumen, etc. Please remove it if you win!
Spiking involves driving large nails or similar deep into the tree. See Ecodefense for methods (Chapter xx). Chainsaw operators might be injured if their saw unexpectedly hits a spike within a tree, and "kicks back". Some would argue that this risk does not make this a nonviolent tactic. Unless the spiking is blatantly obvious, you must have permanent warning signs. The chainsaw operators would then have to carefully and slowly remove all metal before starting work. They may use metal detectors for this, so make sure they know if you're using non-metal spikes (eg. ceramic or plastic).
Spiking has been most effective when used to fight large logging operations outside Britain, where the developer's goal is to clear-cut forest and process the timber. Spikes can mangle processing machinery in the saw mill. Where the objective is to stop trees being trashed rather than to stop their felling for timber, spiking may not be very effective - especially as many trees are simply bulldozed here, and usually burnt.
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If you have rope or short scaffold poles fixed about 5 foot from the top of the tripod, they won't be able to lower the tripod by pulling it's legs apart. At Newbury in 1996, security guards used a LandRover with a roof rack, which they reversed in under the tripod apex. They stood on the roof and pulled down the sitter, after cutting any handcuffs or locks. It may be worth working on LandRover-proofing; for instance, positioning the tripod so they can't drive under it, or overlapping the legs of several tripods for mutual protection. Cherry-pickers have also been used.
A bipod can be incorporated between two tripods, linked with a rope or further poles via the apex of each structure. The stability of the bipod depends entirely on its link to the two tripods. This method defends a larger area than separate tripods.