"Rock bolts are a staple in the mining industry. There are darn few failures. Of course the rock bolts are specified by engineers who work for the mining company and installed by miners whose safety depends on them. You tend to do things better if your life depends on it."
Spot on, at the coal mines I worked at in the UK these were used extensively and successfully. They were especially effective in situations such as "bad ground", for example, a 4 way junction with a couple of faults running through it. But in this situation there was wide understanding that this was not permanent, that in the end the fault(s) will win so the roof was inspected every shift.
For large headings and tunnels (mining & civil) I've seen grouting and rock bolts used (very impressively at Dinorwig power station in Wales), in civil projects interlocking concrete panels, I don't remember seeing panels and bolts used together but then I've been out of the industry for 20 years.
The time I spent with the NCB taught me how very impermanent underground excavations can be, but also how surprisingly resistant some others can be. A working pit is a constantly changing environment, exploit and move on. Structural permanence is relative to an areas usage, you don't want your main horizons and roadways to need constant maintenance, on the other hand the waste behind the coal face is in a constant state of controlled collapse.
Civil projects have a different focus, these are intended to be permanent structures, the engineering is different, the approach is different. I had the opportunity to apply to work on the Chunnel and also in South African coal mines. I refused both times for the same reason which was the overall safety record in these sectors.
BTW, some of the miners I worked with thought the epoxy was great, got them really high...
I mainly use SSH at work to establish a connection to my mailserver for Thunderbird and occasionally for some quick admin but I've never properly looked at web browsing.
One of my colleagues has though and he gave up because he couldn't forward DNS queries, is this right or is there a workaround ?
midpSSH (java app) macros do the job for me along with a number of shell scripts on the server for routine stuff. Command entry via the phone keys for other stuff is not exactly flexible but the combination is a good compromise.
The K700i email client is poor so I use ReqWireless' java Email viewer 3.5, for managing an imap account with multiple folders, it's pretty good overall but of course the text entry is not exactly user friendly:-) (is about 20 dollars I think)
On the whole, if you just want to keep in touch (servers and email) on the move the above combination works ok.
Probationary periods in UK companies are fairly standard and usually from 3 to 6 months. During this period it is relatively easy for any firm to get rid of an employee they feel they have made a mistake hiring. After that period, _even if you then get a contract_ (which while the law, frequently is delayed for as long as the firm feel they can get away with it), you effectively have absolute minimal rights until you have worked for the company for 2 years continuously.
Even then, in the UK it is standard to include a clause in the contract of employment that states that the contract can be changed or added to by the company at any time just by posting a notice on the designated notice board (v small writing, covered by people selling sh1te etc). Very often there is the "standard" notice (and or clause in contract) saying that all policies must be adhered to... i.e. make bl33din well sure you read your email and the noticeboard properly and sign nothing, ever, burn the lawyers, make them scream:-)
This image is intriguing, the outcrop's stratification & cross-bedding strikes (no pun intended) me as an almost perfect example of some of the same formations you can see on the Pennine moorland in Northern England. That was the first thing I thought before I followed through and thought about this being on Mars... then I nearly did follow through:-)
All these Pennine grits and sandstones (100's of meters of deposits) were formed by serious amounts of water over a relatively short peroid of time.
I'm not sure about the pavement effect or the weathering process that can form it but I have seen it locally, England that is:-)
Slashdot Mirror
"Rock bolts are a staple in the mining industry. There are darn few failures. Of course the rock bolts are specified by engineers who work for the mining company and installed by miners whose safety depends on them. You tend to do things better if your life depends on it."
...
Spot on, at the coal mines I worked at in the UK these were used extensively and successfully. They were especially effective in situations such as "bad ground", for example, a 4 way junction with a couple of faults running through it. But in this situation there was wide understanding that this was not permanent, that in the end the fault(s) will win so the roof was inspected every shift.
For large headings and tunnels (mining & civil) I've seen grouting and rock bolts used (very impressively at Dinorwig power station in Wales), in civil projects interlocking concrete panels, I don't remember seeing panels and bolts used together but then I've been out of the industry for 20 years.
The time I spent with the NCB taught me how very impermanent underground excavations can be, but also how surprisingly resistant some others can be. A working pit is a constantly changing environment, exploit and move on. Structural permanence is relative to an areas usage, you don't want your main horizons and roadways to need constant maintenance, on the other hand the waste behind the coal face is in a constant state of controlled collapse.
Civil projects have a different focus, these are intended to be permanent structures, the engineering is different, the approach is different. I had the opportunity to apply to work on the Chunnel and also in South African coal mines. I refused both times for the same reason which was the overall safety record in these sectors.
BTW, some of the miners I worked with thought the epoxy was great, got them really high
I mainly use SSH at work to establish a connection to my mailserver for Thunderbird and occasionally for some quick admin but I've never properly looked at web browsing. One of my colleagues has though and he gave up because he couldn't forward DNS queries, is this right or is there a workaround ?
midpSSH (java app) macros do the job for me along with a number of shell scripts on the server for routine stuff. Command entry via the phone keys for other stuff is not exactly flexible but the combination is a good compromise. The K700i email client is poor so I use ReqWireless' java Email viewer 3.5, for managing an imap account with multiple folders, it's pretty good overall but of course the text entry is not exactly user friendly :-) (is about 20 dollars I think)
On the whole, if you just want to keep in touch (servers and email) on the move the above combination works ok.
Probationary periods in UK companies are fairly standard and usually from 3 to 6 months. During this period it is relatively easy for any firm to get rid of an employee they feel they have made a mistake hiring. After that period, _even if you then get a contract_ (which while the law, frequently is delayed for as long as the firm feel they can get away with it), you effectively have absolute minimal rights until you have worked for the company for 2 years continuously.
:-)
Even then, in the UK it is standard to include a clause in the contract of employment that states that the contract can be changed or added to by the company at any time just by posting a notice on the designated notice board (v small writing, covered by people selling sh1te etc). Very often there is the "standard" notice (and or clause in contract) saying that all policies must be adhered to... i.e. make bl33din well sure you read your email and the noticeboard properly and sign nothing, ever, burn the lawyers, make them scream
This image is intriguing, the outcrop's stratification & cross-bedding strikes (no pun intended) me as an almost perfect example of some of the same formations you can see on the Pennine moorland in Northern England. That was the first thing I thought before I followed through and thought about this being on Mars ... then I nearly did follow through :-)
All these Pennine grits and sandstones (100's of meters of deposits) were formed by serious amounts of water over a relatively short peroid of time.
I'm not sure about the pavement effect or the weathering process that can form it but I have seen it locally, England that is :-)