scanner.lua

command = '/testforblock '
ore =  'railcraft:ore_metal 5'
lx = -175
ly = 29
lz = -393
wide = 45
hmax = 30
hmin = 30
for x=lx-wide,lx+wide do
    for z=lz-wide,lz+wide do
        for y=hmin,hmax do
            loc = tostring(x)..' '..tostring(y)..' '..tostring(z)
            bol = commands.testforblock(loc..' '..ore)
            if bol then
                print("Find one at "..loc)
                return 0
            end
            print(loc)
        end
    end
end