Since pipelines are buried underground, pipeline companies use line markers like those shown to the right. The markers indicate the approximate location of the pipeline. Markers are placed where pipelines intersect streets, railroads, rivers and heavily congested areas.
In answer to your question James, I was on Tamsulosin for several years and suffered no serious side effects other than a reduction in ejaculate, a slight lowering of BP and pinpoint pupils.
You should not use this medication if you are allergic to tamsulosin. Do not take tamsulosin with other similar medicines such as alfuzosin (Uroxatral), doxazosin (Cardura), prazosin (Minipress), silodosin (Rapaflo), or terazosin (Hytrin).