THE CACHE
The cache is not located at the posted coordinates, but you will have to come to this location to find some missing information to calculate the cache's final coordinates and guess the lock number combination to open the cache and sign the logbook.
At the posted coordinates you will find a reconstruction of a piece of Sydney's past that many have forgotten: The Wood Block Boys
FINAL COORDINATES - S 33° 51.ABC E 151° 12.DEF
LOCK COMBINATION - EDF
The posted coordinates will direct you to one section of George Street in The Rocks that has been the first road made by Europeans following their arrival in Sydney Cove in January 1788.
The original track of the street followed the lines of tents that were erected for shelter along the cove, after the arrival of the First Fleet. There were no carriages, carts or wheeled vehicles so the small population basically had to walk everywhere. The "road" was little more than a dirt track and was a nightmare during the dry season , creating clouds of dust and even worse in winter, becoming a muddy quagmire. The original road was called Sergeant-major's Row or Spring Row and then High Street, but Governor MacQuarie changed it to George Street in 1810 in honor of king George III. The road was still very much a nightmare.
Luckly during the 1820's skilled engineers began arriving in Sydney and the condition of roads improved with new building methods. New techniques were adapted to colonial conditions and roads began to be constructed in layers of graded broken stone and a final coat of ironstone.
By the 1880's, Sydney was a thriving commercial centre with a growing population and expanding city precinct. Steel shod horses , buggies and carriages, being the backbone of personal and commercial transportation, needed a firm and stable surface that provided good traction and wasn't too noisy. Experiments with sandstone failed in heavy traffic areas as stone paving readily wore and cracked. Shopkeepers continually complained about the dust, dirt and mud.
The solution? Woodblocks. Woodblocks were selected because they reduced noise, looked attractive, minimised dust, were durable and easily cleaned. Plus best of all, Australia had an ample supply of suitable hardwood timber. The woodblocks were washed down every night with disinfectant to lower the risk of disease.
The Block Boys: During the day the council employed "block boys" to pick up rubbish and horse droppings to keep the streets clean. They were affectionately called "Sparrow starvers" because in the droppings were undigested seeds that the sparrows ate. Strangely enough it became a much sort after job by local boys and often led to a career on the council.
Sydney City Council began to use woodblocks as a road surface from the 1880s. By 1900 much of Syndey from Broadway to Dawes Point and from Darling Harbour to Kings Cross was paved in woodblocks. The last woodblocks were laid during the 1930s. The use of woodblocks for road surfacing had been tried in Britain and the United States but was found to be unsatifactory, possibly due to rot from higher rainfall and the use of poorer and more common softwoods found in these countries.
The section of George Street between Dawes Point and Argyle Street was paved in 1888 and used to trial various timbers for woodblocks. Sydney council also experimented with the use of tar and pitch, block spacing, bedding and surface finishing. The best timbers were Australian hardwoods including blue gum, red gum, jarrah, blackbutt, tallowwood, karri and turpentine.
The blocks were brick shaped and laid in stretcher bond pattern. The surface of the woodblocks was top dressed with tar, peagravel and sand to provide a firm surface and improve traction. Consequently George Street North did not require maintenance for five years, proving the cost and labour effectiveness of woodblock paving.
The gradual replacement of horse and cart with much heavier automobiles saw an increase in wear of the woodblocks. They were progressively removed from most parts of the city and replaced with asphalt. The woodblocks were great for firewood and duringthe Great Depression young boys were often caught helping themselves to one or two to heat the family home and cook dinner. The Council also gave redundant woodblocks to the elderly and poor.
Not all the woodblocks in The Rocks were removed. Some remain under the asphalt in sections of George Street. During footpath widening works, woodblocks were uncovered and found to be in very good condition at least 80 years after they were first laid. Wherever possible the blocks are left in place for future generations to discover.
The original woodblocks were finished with tar and pitch mixed with pea gravel. Tar and pitch are now identified as a health risk and are not permitted in contemporary building works. These materials have been substituted with bitumen emulsion which looks and performs like tar.
CALCULATIONS
A - Number of letters of the MetalPolish Brand Name (B...O)
B - Removal of Woodblacks, 193Bs
C - George Street, around 18C0, showing stone paving prior to woodblocks
D - Woodblocks were found to be in very good condition - more than 11D years later.
E - Thomas Telford and John Loudon McAdam began arriving in the 18E0s
F - In 1810 in honour of King George F